Re: 'advanced' 7 MHz.

1999-03-24 Thread Alwin Henseler


Manuel Bilderbeek  <[EMAIL PROTECTED]>


> > -You have to connected a signal for every single piece of hardware 
> > that requires 3.58 MHz. access: VDP, MSX Audio, MSX-Music, diskaccess 
> > (sometimes), Gouda's SCSI interface, etc. etc. etc.
> 
> What??? Does my Gouda SCSI interface need 3.5MHZ??? I thought I could double 
> it's performance with your MSX Super Turbo to 200kB/s!

I don't know how it is on other machines. I just know the Gouda SCSI 
interface (ROM v1.51) only worked on MY computer with:
-turbo switched back for all I/O ports (read: including the I/O ports 
where the SCSI controller is on), AND
-turbo switched back for the cartridgeslot the interface was in

This way, it worked up to 8 MHz., on MY system.
(but in essence, system running on 3.58 during harddisk transfers).
If connected different, it could work, but not reliable.
BTW. the manual itself warns that 7 Mhz. doesn't work well with the 
interface. I still think it's a software issue.


> Does your MSX Super Turbo switches back for every I/O access?

Same as with 7 MHz. circuits:
If the Z80's IORQ signal is connected to one of the inputs: yes
If the Z80's IORQ signal is not on one of the inputs: no
(IORQ = Z80 pin 20)


Greetings,

Alwin Henseler   ([EMAIL PROTECTED])

http://huizen.dds.nl/~alwinh/msx  MSX Tech Doc page


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Re: Discdrive

1999-03-24 Thread Alwin Henseler


"Someone"  ([EMAIL PROTECTED])  wrote:


> I've got a nms8245, but the discdrive doesn't work very well anymore.
> (actually it doesn't work at all.:))
> And now i have noticed that all nms8245 drives have the same kind of
> problem.
> So I'm searching for a new discdrive for my 8245, but I don't want
> the standard discdrive for the 8245.

The 8245 drive has very often the problem that a rubber band in it 
starts slipping -> disc doesn't rotate anymore.

There seem to be replacements available for this rubber band. Try 
that first; if that was it, repair is quick, easy & cheap.


> Is this possible;
> - can you put a normal doublesided drive in a nms8245?

You can.

> - And where can I get one..??

In any computer or electronics shop. You can use the normal 1.44 
HD/DD drives. Only thing you need to change is the connector. I think 
the required data is in the Ultimate MSX FAQ (www.faq.msxnet.org).


Alwin Henseler([EMAIL PROTECTED])

http://huizen.dds.nl/~alwinh/msx MSX Tech Doc page



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Re: Problems when changing stack

1999-03-24 Thread Alwin Henseler


Nestor Soriano  <[EMAIL PROTECTED]>  wrote:


> Hi people... problems again... this time, when changing stack. In a new
> update of NestorAcentos I'm developing, I put the following piece of code
> attached to the timer interrupt hook. The code is placed in a reserved zone
> on page 3:
> 
> ld (SAVESP),sp
> ld sp,NEWSP+100
> push all
> .
> . (changes slot and segment on page 2, do stuff and restores old status)
> .
> pop all
> ld sp,(SAVESP)
> jp old interrupt hook
> 
> SAVESP: dw 0
> NEWSP:  ds 100
> 
> Well, a program executing such code causes the system to crash when any
> other program is executed. Someone knows where is the problem?

Advanced interrupt programming ;-))
Isn't it possible, that sometimes a next interrupt occurs, while a 
previous interrupt routine is still being processed?
If that happens everytime, it will crash, but if occasionally, then 
no problem with proper written interrupt routine.

For this to work, the interrupt routine should be re-entrant: 
allowing to be executed again, even when not finished.

Try the above:

save (FIXED address), stackpointer
...
(interrupted again)
...
save (same fixed address), stackpointer for 2nd interrupt

restore stack for 2nd interrupt
finish 2nd interrupt (=return to previous interrupt handling)

restore stack for 1st interrupt, with SP that was overwritten by 2nd 
interrupt -> SP corrupted -> crash/hang

Solution:
Disable interrupts (DI), then save SP etc., don't call 
anything that could re-enable interrupts in between, restore SP, and 
only AFTER that restore, further interrupts could be allowed.
OR: if possible, don't switch stacks at all.

Other possibility: 100 bytes stack space reserved? Are you sure that 
is enough? (try making far bigger, and see if still crashes)


Greetings,

Alwin Henseler   ([EMAIL PROTECTED])

http://huizen.dds.nl/~alwinh/msx MSX Tech Doc page


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Re: mapperports

1999-03-24 Thread Alwin Henseler


shevek  <[EMAIL PROTECTED]>  wrote:


> The only thing you need to expect is that writing the data you read from
> the mapperport will set it back to the state it was in when you read it.
> All other info about the mapper can be obtained by writing to the port and
> reading and writing the memory.

If the mapperports are write-only (possible), or reading back 
doesn't work good (possible), reading back will get you "undefined", 
usually FFh. Writing that to restore, would select always FFh = not 
the same as previous state.

I consider this issue like this:
-You ARE allowed to read these ports (why not?).
-When you do, there's no telling what you'll get.
So you can read these ports, but what you read, should be considered 
as useless.


>> You also have to take care that some people  have more then 1
>> mapper (however this is technically not allowed , but who cares)

Multiple mappers not allowed? Says who? Says what? Why not?
There are some machines that have a hardware-problem with it, but 
that's more like a mistake in the design of those machines (like the 
Turbo-R with >512K external mapper).


Greetings,

Alwin Henseler ([EMAIL PROTECTED])

http://huizen.dds.nl/~alwinh/msx   MSX Tech Doc page



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Re: Problems when changing stack

1999-03-24 Thread Maarten ter Huurne

At 06:35 PM 3/24/99 +0100, you wrote:

>ld (SAVESP),sp
>ld sp,NEWSP+100
>push all
>.
>. (changes slot and segment on page 2, do stuff and restores old status)
>.
>pop all
>ld sp,(SAVESP)
>jp old interrupt hook

Is it possible that another interrupt is granted while the '...' section is
executed?
If that happens, SAVESP will be overwritten.

Another option: 100 bytes is not enough and you get a stack overflow. But
you probably thought of that.

Bye,
Maarten



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Re: specs MBWAVE file format?

1999-03-24 Thread Jun-Sung Kim


Hi all MSX hard-cores,

> 
> does anyone have some specs on the MBWAVE file format or am I supposed to
> rip it out of the replayer?
> 
 That is exactly what I want!!!
 I asked it but no answer I've got.

 Can I obtain the ripped replayer? ... Cas ...? 8)

Greetings,
   - Jun.

* I don't like to analyze the MWM files... help me.
* Also I still want MFM <-> MWM converter...



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Re: What's the latest MSX ?

1999-03-24 Thread Jun-Sung Kim


Hello!

> 
> You can find a nice list of new projects in Joon-Sun Kim's homepage:
> http://unity.kaist.ac.kr:8080.
> 
 I'm sorry. This site is closed in a while. Because I'm very busy...
I will open it again April 1st.

 And also I'm very sorry to all of you waiting for the Jun Soft and
East Sea Products. I cannot even touch my pretty MSX...
All my works for MSX will be continued on April.

  - Jun.

* By the way, my name is Jun Sung Kim...



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Re: LOGO

1999-03-24 Thread Adriano Camargo Rodrigues da Cunha


> >>Than I should find some lousy MSX cartridge first, to tear apart.
> >Eddy II, LOGO, enough of them.
> Point taken!

There is a brasilian version of LOGO (people says it was made by
Itautec and other company that I don't remember now) that is simple the
best version of LOGO I ever saw. I have this cartridge. It's nice, has a
pretty turtle and can use all resources of MSX (disk, sprites, sound,
redefinible characters, etc).


Adriano Camargo Rodrigues da Cunha   ([EMAIL PROTECTED])
Engenharia de Computacao - UNICAMP
http://www.adrpage.cjb.net   MSX-TR:I have one.And you?

 *** NEW URL! AdrianPage now is at http://www.adrpage.cjb.net ***

* Did you already smiled to your computer today? Yes? How stupid! *



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Participants MSX-MEETING Tilburg 24-04-99

1999-03-24 Thread cgv

This is the actual list of participants to the meeting 24-04-1999
MSX still going strong !!
The meeting will be held on 24-04-99 from 10.00 to 16.00 hr. at the
adress:  De Schans 123  Tilburg.

ACCLUB
Schnotzendorf 6 
A-3324  Euratsfeld
Oostenrijk

Bob Roos
Van Coothstraat 25
5281 CT Boxtel
Nederland
0411-683513

Breda Computer Supplies 
M.v.Herbachstraat 5
4827 LG Breda
Nederland
076-5425140
06-52937506

CGV
Bartokstraat 196
5011 JD Tilburg 
Nederland
013-4560668 / 4681421
Frank Pison / Ad Mutsaers

Compjoetania T.N.G.
Goorweg 24
B-2221  Booischot
Belgie
David Heremans

Computer Club Rijnmond
Vettenoordstraat 65b
3131 TP Vlaardingen
Nederland
010-4357992
Hans de Goede

DATAX & KENDA
Singelweg 1
9919 HM Loppersum
Nederland
0596-572525
Alex Ganzeveld

Delta Soft
Hogekamp 4
3853 GM Ermelo
Nederland
J.v.d.Boor

Flying Bytes
Astronautenweg 350
1622 DX Hoorn
Nederland
0229-249780
A. de Raad

FONY
Potgieterstraat 19
3892 XX Harderwijk
Nederland
0341-420581
Stephan Szarapuski

Future Disk
Aldenhofstraat 36
6191 GV Beek LB 
Nederland
046-4374322 na 19.00
Koen Dols

HCC MSX Gebruikersgroep
Westerstraat 107
3818 NK Amersfoort
Nederland
033-4620579
H.v.Soest

MSX - NBNO
I.v.Portugalstraat 9
5346 PJ Oss
Nederland

MSX Gebruikersgroep Zandvoort
Postbus 195
2040 AD Zandvoort
Nederland
023-5717966 
J. Hoogendijk na 18.00 uur

MSX-Club West-Friesland
Rondeelstraat 25
1628 KH Hoorn
Nederland
0229-270618
BAS Kornalijnslijper

OMEGA
Helbloemmeen 106
3844 VJ Harderwijk
Nederland

Paragon
Dopperstraat 55
3752 JB Bunschoten
Nederland
033-2983880
Andal v. Kalleveen

Stichting Sunrise
Postbus 61054
2506 AB S GRAVENHAGE
Nederland
020-6373469
Stefan Boer (R.Hiep) 070-3609707

Teddy Warez
Jan palachweg 17
9403 JS Assen
Nederland
0592-340197
Frederik Boelens

The New Image
Parelstraat 218
9743 JH Groningen
Nederland
050-5777453
Bas Wijnen

The Unicorn Corporation
Adelaarstraat 57
3514 CC Utrecht 
Nederland
030-2734942
Ernst Schuller

Totally Chaos
Rotterdamstraat 73
6415 AV Heerlen 
Nederland
045-5725995


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Remove

1999-03-24 Thread Maurício Braga





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Re: page 1 diskloading (was: 64K VRAM?)

1999-03-24 Thread Erik



Jon De Schrijder schreef:

> On Tue, 23 Mar 1999, shevek wrote:
>
> > On Mon, 22 Mar 1999, Marco Antonio Simon dal Poz wrote:
> >
> > > On Mon, 22 Mar 1999, shevek wrote:
> > >
> > > > On Mon, 22 Mar 1999, Marco Antonio Simon dal Poz wrote:
> > > >
> > > > > For the most part of diskroms, DMA can be in page 1, because they have
> > > > > access to FDC through addresses 7FF8h-7FFCh and also BFF8h-BFFCh, and they
> > > > > transfer a small routine to F1BFh (or something like that) that allows a
> > > > > disk transfer to happen in page 1.
>
> I don't think this is true.



Yes it's true , on all philips , exept for some old VG8230 , also #BFF8 - #BFFC is
used
for accessing the fdd controller , a little code will be placed inside the sector
buffer
and used to transfer data to page 1.
when you put the "fast" diskrom from a NMS8250 inside the VG8230 is will crash
when you want to load msx-dos
when you make a little modification and "mirror" 7FF8 etc to BFF8 it will work

erik de boer

--



>




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Re: MegaRAM (mapper 8230)

1999-03-24 Thread Erik



Laurens Holst schreef:

> >So, some people did, and it appears _you_ are wrong. Mapper is and stays
> >optional for MSX2... Otherwise: how could it be that there is an MSX2 logo
> on
> >the VG-8230 and the HB-G900P???
>
> The G900P has no mapper, ok, but the 8230 has! (toch? It was the one with a
> 128k mapper with 64k mounted in it).
>
> ~Grauw

nope , no the 8230 has no mapper , the only philips with a 128K mapper and 64K
mounted was the 8220

erik
--




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Re: What's the latest MSX ?

1999-03-24 Thread john . j

Rainier Maas schrieb:

> >> MC> Hi MSXers. I want to know what's the latest msx machine made or
> >>
> >>The latest MSX was Panasonic FS-A1GT (MSXTurboR)
> >
> >Sure, but... does anyone knows about the FS-A1XT, or FS-A1WT? I
> >think I read something about it into the Ultimate MSX FAQ.
>
> I think those two are just rumours. I've never seen any pictures or specs
> from them.
>

Arent these MSX2+ ?? (XT and WT)

greetz
JJoS


--
Tilburg Team: Janosch, SGI, D-AX, inDark,
   Maspo, SFS, Chief-Gavaman




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Re: page 1 diskloading (was: 64K VRAM?)

1999-03-24 Thread Nestor Soriano

>> But this routine is only provided in MSX-DOS(2) environment; when in
>> BASIC, a RET instruction is placed at #F36E.  So: disktransfer in page1 in
>> BASIC is probably not possible (or perhaps the F37D entry temporarily
>> changes the #F36E hook; didn't test it); This is logical: BASIC ROM is
>> normally selected in page 1.
>It is not that logical. I want to make a program that is started from
>basic but switches ram to page 1. Than calling the diskrom on f37d with
>dma in page 1 would be useful. Until now, I always avoided it, but I would
>like to know if it would work on every MSX. If so, I could just as well
>use it...

You can also start your program from DOS and switch BIOS on page 0: paging
will be the same as when starting from BASIC and switching RAM on page 1,
but you will have #F36E routine available. This should work. Just try. 8-)


 15th MSX users meeting in Barcelona: May 1th, 1999 

  Konami Man - AKA Nestor Soriano (^ ^)v - Itsumo MSX user

   New address!!http://konamiman.msx.tni.nl
   [EMAIL PROTECTED]   ICQ#: 18281450

 Metal Gear for MSX - (C) Konami 1987  (Nothing new under the sun...)



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Problems when changing stack

1999-03-24 Thread Nestor Soriano

Hi people... problems again... this time, when changing stack. In a new
update of NestorAcentos I'm developing, I put the following piece of code
attached to the timer interrupt hook. The code is placed in a reserved zone
on page 3:

ld (SAVESP),sp
ld sp,NEWSP+100
push all
.
. (changes slot and segment on page 2, do stuff and restores old status)
.
pop all
ld sp,(SAVESP)
jp old interrupt hook

SAVESP: dw 0
NEWSP:  ds 100

Well, a program executing such code causes the system to crash when any
other program is executed. Someone knows where is the problem?

Thanx!


 15th MSX users meeting in Barcelona: May 1th, 1999 

  Konami Man - AKA Nestor Soriano (^ ^)v - Itsumo MSX user

   New address!!http://konamiman.msx.tni.nl
   [EMAIL PROTECTED]   ICQ#: 18281450

 Metal Gear for MSX - (C) Konami 1987  (Nothing new under the sun...)



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Easy method! (was Re: remove)

1999-03-24 Thread Nestor Soriano

>>  HOW TO GET
>>  2 MILLION PEOPLE TO SEND YOU
>>  $ 2.00 !!!
>>  LEARN MY EASY METHOD, PLUS RECEIVE PROOF THIS WORKS.

>>  RUSH $ 2.00 ( U.S ) FOR SHIPPING AND HANDLING TO : 

The method for making people to send 2$ is to say: send me 2$ and I'll tell
you the method etc, etc. Oh my god, very primary! MSX users are obsolete
but not so stupid!!!
X-)


 15th MSX users meeting in Barcelona: May 1th, 1999 

  Konami Man - AKA Nestor Soriano (^ ^)v - Itsumo MSX user

   New address!!http://konamiman.msx.tni.nl
   [EMAIL PROTECTED]   ICQ#: 18281450

 Metal Gear for MSX - (C) Konami 1987  (Nothing new under the sun...)



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Re: What's the latest MSX ?

1999-03-24 Thread Rainier Maas

>> MC> Hi MSXers. I want to know what's the latest msx machine made or
>>
>>The latest MSX was Panasonic FS-A1GT (MSXTurboR)
>
>Sure, but... does anyone knows about the FS-A1XT, or FS-A1WT? I
>think I read something about it into the Ultimate MSX FAQ.


I think those two are just rumours. I've never seen any pictures or specs
from them.

Rainier Maas



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Re: Updated my homepage...

1999-03-24 Thread Nestor Soriano

>Somehow, I always seem to forget the URL in these kind of messages.

Put it in your signature, like I do! ;-)

Hasta incluso!


 15th MSX users meeting in Barcelona: May 1th, 1999 

  Konami Man - AKA Nestor Soriano (^ ^)v - Itsumo MSX user

   New address!!http://konamiman.msx.tni.nl
   [EMAIL PROTECTED]   ICQ#: 18281450

 Metal Gear for MSX - (C) Konami 1987  (Nothing new under the sun...)



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Re: What's the latest MSX ?

1999-03-24 Thread Ricardo Jurczyk Pinheiro

At 00:11 22/03/99 +0100, you wrote:
> MC> Hi MSXers. I want to know what's the latest msx machine made or
>
>The latest MSX was Panasonic FS-A1GT (MSXTurboR)

Sure, but... does anyone knows about the FS-A1XT, or FS-A1WT? I
think I read something about it into the Ultimate MSX FAQ.

> MC> if exists some msx in development today.
>
>Here in Spain, Leonardo Padial is developing the MMSX, a modular MSX machine
>with a Z380, and several expansion cards: new VDP (MSX2, MSX2+, GFX9000
>compatible and more), a 3D card (five times faster than PlayStation), and
>others.
>
>Also exists the Omega Z380 project and Solid's one, but I don't have
>information about them.

You can find a nice list of new projects in Joon-Sun Kim's homepage:
http://unity.kaist.ac.kr:8080.

The Omega project... "He's dead, Jim".
There is some projects from Ademir Carchano too, but... It's a secret! 
=)

ByE!


Ricardo Jurczyk Pinheiro - ICQ UIN:3635907 - [EMAIL PROTECTED]|_Sola  Scriptura |
http://i.am/rjp -M.Sc. Numerical Modelling (hope so!)  |_ Sola Gratia  |
UFF - Niteroi - RJ - Brazil  -  [EMAIL PROTECTED]_|  Sola Fide  |
MSX, ST, B5, X-F, Anime, Christian, Maths, CuD, Linux!_|  Solo Cristi  |
Christian, Rock, Comics, Transformers, and hate M$!  | Soli Deo Gloria |




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Re: remove

1999-03-24 Thread ALBERTO VALVERDE





>From: "Surrec" <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: <[EMAIL PROTECTED]>
>Subject: remove
>Date: Wed, 24 Mar 1999 16:59:48 +0100
>
>remove
>  - Original Message - 
>  From: [EMAIL PROTECTED] 
>  To: [EMAIL PROTECTED] 
>  Sent: woensdag 24 maart 1999 9:32
>  Subject: HOW TO GET 2 MILLION PEOPLE SEND YOU $ 2.00
>
>
>  ___
>  If you wish to be removed from this advertiser's future mailings, 
please reply 
>  with the subject "Remove" and this software will automatically 
block you 
>  from their future mailings.
>
>
>
>
>
>
>-
-
>
>
>
>
>
>
>  HOW TO GET
>  2 MILLION PEOPLE TO SEND YOU
>  $ 2.00 !!!
>
>
>  LEARN MY EASY METHOD, PLUS RECEIVE PROOF THIS WORKS.
>
>  RUSH $ 2.00 ( U.S ) FOR SHIPPING AND HANDLING TO : 
>
>  PANTAI VILLA MARKETING
>
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>
>  50778 KUALA LUMPUR
>
>  MALAYSIA
>
>

Get Your Private, Free Email at http://www.hotmail.com


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remove

1999-03-24 Thread Surrec



remove

  - Original Message - 
  From: 
  [EMAIL PROTECTED] 
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  Subject: HOW TO GET 2 MILLION PEOPLE SEND 
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specs MBWAVE file format?

1999-03-24 Thread Cas Cremers

Hi,

does anyone have some specs on the MBWAVE file format or am I supposed to
rip it out of the replayer?

Cas




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Betr.:: Re: 64K VRAM?

1999-03-24 Thread Eric . Boon

[Using disk I/O on page 1 ($4000-$7FFF)]
> 2) It might be a problem when you are working under basic, using  address
> ªF37D to access the BDOS. Though, I'm not sure about that.

I am. I tried to load some data somewhere in page 1 using an ML routine
which was called from BASIC (DEFUSR=:A=USR(0)). Didn't work. I had to
moved the DTA to page 2 and copy the data later to the destination address
in page 1.

(Until I discovered that I could as easily switch the memory mapper block I
wanted to load the data in to page 2, load the data and then switch that block
to page 1 :-))

Eric


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Re: page 1 diskloading (was: 64K VRAM?)

1999-03-24 Thread shevek

On Wed, 24 Mar 1999, Jon De Schrijder wrote:

> But this routine is only provided in MSX-DOS(2) environment; when in
> BASIC, a RET instruction is placed at #F36E.  So: disktransfer in page1 in
> BASIC is probably not possible (or perhaps the F37D entry temporarily
> changes the #F36E hook; didn't test it); This is logical: BASIC ROM is
> normally selected in page 1.

It is not that logical. I want to make a program that is started from
basic but switches ram to page 1. Than calling the diskrom on f37d with
dma in page 1 would be useful. Until now, I always avoided it, but I would
like to know if it would work on every MSX. If so, I could just as well
use it...

Bye,
shevek

---
Visit the internet summercamp via http://polypc47.chem.rug.nl:5002



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Re: 64K VRAM?

1999-03-24 Thread shevek

On Wed, 24 Mar 1999, Laurens Holst wrote:

> MSX and DMA??? Seems quite impossible to me...
> 
> Isn't it?

Ehm... well, in the BDOS specs the term DMA-address is used for the start
address of disk-actions (read-write). This is NOT the same as DMA on
PC's...

Bye,
shevek

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page 1 diskloading (was: 64K VRAM?)

1999-03-24 Thread Jon De Schrijder



On Tue, 23 Mar 1999, shevek wrote:

> On Mon, 22 Mar 1999, Marco Antonio Simon dal Poz wrote:
> 
> > On Mon, 22 Mar 1999, shevek wrote:
> > 
> > > On Mon, 22 Mar 1999, Marco Antonio Simon dal Poz wrote:
> > > 
> > > > For the most part of diskroms, DMA can be in page 1, because they have
> > > > access to FDC through addresses 7FF8h-7FFCh and also BFF8h-BFFCh, and they
> > > > transfer a small routine to F1BFh (or something like that) that allows a
> > > > disk transfer to happen in page 1.

I don't think this is true. The DISKIO(#4010) can transfer data in page 1
through the following mechanism: when data is transferred in page 2 or 3,
no slotswitching is needed. (bit 15 of the startaddress=1) When bit 15 of
the startaddress=0: transfer to page 0 or 1: (also special slotswitching
in page1 is needed when begin of transfer is in page 0 because transfer
can be partially in page 1 too! example: from #100 to #6000)
In that case: DISKIO gets sector bufferaddress in page3: pointer at
address #F34D/E. This seems to be the standard address, both in DOS1 and
DOS2. (It has to be, otherwise a floppydrive (DOS1) diskrom would not
function anymore when running DOS2) This is a 512 bytes buffer, large
enough to fit 1 sector.
So when reading from device: data is transferred to the sectorbuffer. Then
the registers are filled with values like for a normal LDIR (from
sectorbuffer to final destination in memory) and a call is made
to address #F36E (also standard for DOS1 and DOS2 kernels).
Here a routine is provided to make the main ramslot active in page 1. Before
making the ram active, the diskromslotcode is fetched by calling a
'where_am_i' routine in the diskrom (#402D I believe). When ram is
selected in page1 an LDIR instruction is executed and the diskrom is
reselected in page1.

But this routine is only provided in MSX-DOS(2) environment; when in
BASIC, a RET instruction is placed at #F36E.  So: disktransfer in page1 in
BASIC is probably not possible (or perhaps the F37D entry temporarily
changes the #F36E hook; didn't test it); This is logical: BASIC ROM is
normally selected in page 1.

> > > 
> > > Is that MSX-standard or just the case on many MSXs?
> > 
> > The standard doesn't say anything about the method that the diskrom should
> > use. So, it's just the case on many MSXs. The standard only says that the
> > interface should use memory addresses to transfer data between CPU and
> > FDC.
> 
> Ok, but this means that using DMA in page 1 is against MSX standard, or
> not?

don't know; I only noticed the following:
*diskrom DISKIO supports it
*F36E routines provided by DOS1/DOS2
*when you make a diskrom with no support for page1 disktransfer, all
things work fine. I don't think DOS2 uses it; don't know about DOS1.

Can you all confirm this information?

jon




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Remove

1999-03-24 Thread Niels Walta

At 16:32 24-3-99 +0800, you wrote:
>___ If you wish to
>be removed from this advertiser's future mailings, please reply  with the
>subject "Remove" and this software will automatically block you  from their
>future mailings.Content-Type: text/html; charset=iso-8859-1;
>name="2dollars.htm" Content -Transfer - Encoding: quoted -printable
>Content-Disposition: inline; filename="2dollars.htm" Content-Base:
>"file:///C|/My%20Documents/Project/2dollars.htm" HOW TO GET
>
>2 MILLION PEOPLE TO SEND YOU
>
>$ 2.00 !!!
>
> LEARN MY EASY METHOD, PLUS RECEIVE PROOF THIS WORKS.RUSH $ 2.00 ( U.S )
>FOR SHIPPING AND HANDLING TO : PANTAI VILLA MARKETINGDEPT 102, P.O. BOX
>1245850778 KUALA LUMPURMALAYSIA



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AW: Euhhh..? Building MegaRAM

1999-03-24 Thread Coen van der Geest

Hi there,

>No there are more but you have to cut it 'konami size' anyway

You can also use cassette tape boxes. They are of equal size and fit in
at least my Sony 700.

Grtz
Coen




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RE: 64K VRAM?

1999-03-24 Thread Ricardo Bittencourt Vidigal Leitao

On Wed, 24 Mar 1999, Hans Otten wrote:

> Hardware DMA indeed not possible with the builtin chips in the MSX.
> But the term DMA stems from long ago (CP/M for eaxmple) when with DMA was
> meant the memory location/buffer where the transferred data to/from is
> stored.
> 

These days I use the term "DTA" (data transfer area) to mean that
old DMA. This avoids lots of confusion, and can be easily changed in
source codes using search-and-replace.


Ricardo Bittencourt   http://www.lsi.usp.br/~ricardo
[EMAIL PROTECTED]"Save the trees: eat more woodpeckers"



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Re: LOG(x) BASIC function

1999-03-24 Thread Cas Cremers

>>I was wondering how BASIC calculates LOG(x). Does it use a look-up table
>>(would require massive amounts of memory), some sort of algorithm (would
>>require massive amounts of CPU time), or some mixed method?


I checked "the MSX red book". Usually, this explains all these matters. So
we check the index for log... page 93... okay here goes:

Address...2A72H
This routine is used by the factor evaluator to apply the "LOG" function to
a double precision operand contained in the DAC. The function is computed by
polynomial approximation using the list of coefficients at 2DA5H.

I checked this. 2DA5H contains two sequences of double-precision
coefficients, each sequence preceded by a byte that indicates the number of
coefficients in the sequence. The first sequence has four coefficients, the
second five. So that makes a data area of (1+8*4)+(1+8*5)=74 bytes.

Some routines at 2C88H and 2C9AH are used to compute odd or even series of a
polynomal, for the approximation. For input the sequences at 2DA5H are used.

>There must be using a way that requires only a little memory. There are
>many math functions present in the math pack in the ROM, for example LOG,
>EXP, SIN, COS, TAN, ATN. They can't all use large tables, there is simply
>not enough space in a 32K ROM.


So there are. Isn't the MSX red book online somewhere? Am I the only one who
has this book?? I can hardly believe that!

>They might use Taylor sequences or a technique like that. Although it's not
>fast (on a Z80), it results in compact code that needs no tables.


As stated, it uses a minimal table for some coefficients.

It is probably a good thing to use something like the routine used by basic.
Sometimes it's even smart to use the routines embedded in the BIOS - the
math routines for double precision are actually quite good.

>>I calculated I'd need about 96kB for a look-up table with reasonable
>>accuracy. Because log(256*256)=4.8164 I'd need 48164 x 2 bytes.
>
>I don't understand that calculation.


me neither.
>
>By the way, there is not just a 10log, you could use 2log or ln (e-log)
>instead.

yeah but it's wise to just do the e-log (as basic does) and compute the rest
from there.

It all depends on priorities...speed or memory?

>If you don't mind wasting memory, why not make a 256x256 table that
>contains the result of x*y? It would take 128K, but it's fast. Although
>slot switching would degrade the performance a bit.

:) I'm wondering what kind of program we are thinking about here...

>Anyway, I don't think using logs will get your multiplications any faster.
>Maybe it's a better strategy to cut down the number of multiplications you
>need to perform?

Yep. And a normal multiplication isn't even that slow. It's a small loop
that gets traversed 8 times at most...

>I think that the fastest way of multiplying a large amount of numbers on
>MSX would be to use a GFX9000. Think about that... ;)

Sure, and use moonsound ram to store the level graphics 8)

Bye,
Cas

http://www.stack.nl/~cas/par/




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RE: Euhhh..? Building MegaRAM

1999-03-24 Thread Bastiaan Hubers

remove all parts from the ISA card and select a part of it to cut it in
>the
shape of a konami-size-cartridge.
>>>
>>>Easier: take any MSX ROM cartridge. No cutting required, looks better too.
>>
>>Than I should find some lousy MSX cartridge first, to tear apart.
>
>Eddy II, LOGO, enough of them.

Point taken!


>>>Actually, is the size of the connector strips the same for MSX and ISA?
>>
>>Yes, I checked, same spacing on the strips. (So a part of a Vesa Local Bus
>>card can be used aswell.)
>>Especially videocards have lots of connector strips on them.
>
>Also same amount of pins?

No there are more but you have to cut it 'konami size' anyway

>>>The simplest way to get a mapper is to start with a MegaROM cartridge,
>>>those already have a mapper IC inside. This is the way ESE does it.
>>>SCC is ideal for this purpose, because after your cartridge is finished,
>>>you can run Konami SCC games with SCC music.
>>
>>I know this, but I'm really very attached to my SCC. Don't want to crack
>the
>>only one I have open.
>
>I recently bought a F1-spirit cartridge at a stuffed animal fair (what was
>'rommelmarkt' again?), for fl.7,50. The reason this price was so low was
>that the asshole had cut out the game-ROM. Aargh. But anyway, I have a empty
>cartridge with SCC now... Where is the description of this ESE-SCC?

Lucky bastard!!

>~Grauw





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RE: Remove

1999-03-24 Thread Patrick Kramer



> -Original Message-
> From: Marco Frissen [SMTP:[EMAIL PROTECTED]]
> Sent: woensdag 24 maart 1999 13:51
> To:   [EMAIL PROTECTED]
> Subject:  Re: Remove
> 
> please people, do _not_ reply to SPAM messages (not even with REMOVE). It
> will not work anyway.
> 
No, sometimes it does, but in this case it's sent through the
mailinglist, so the reply-to field is [EMAIL PROTECTED]
Spamming a mailinglist...tsss...   
Greetz to y'all

Patrick 'f*ck spam' Kramer 


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Mail System Error - Returned Mail

1999-03-24 Thread Mail Administrator

This Message was undeliverable due to the following reason:

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HOW TO GET
2 MILLION PEOPLE TO SEND YOU


RE: 64K VRAM?

1999-03-24 Thread Hans Otten

Hardware DMA indeed not possible with the builtin chips in the MSX.
But the term DMA stems from long ago (CP/M for eaxmple) when with DMA was
meant the memory location/buffer where the transferred data to/from is
stored.

-Original Message-
From: Laurens Holst [mailto:[EMAIL PROTECTED]]
Sent: woensdag, maart 24, 1999 13:20 uur
To: [EMAIL PROTECTED]
Subject: Re: 64K VRAM?


>> > > For the most part of diskroms, DMA can be in page 1, because they
have
>> > > access to FDC through addresses 7FF8h-7FFCh and also BFF8h-BFFCh, and
they
>> > > transfer a small routine to F1BFh (or something like that) that
allows a
>> > > disk transfer to happen in page 1.
>> >
>> > Is that MSX-standard or just the case on many MSXs?
>>
>> The standard doesn't say anything about the method that the diskrom
should
>> use. So, it's just the case on many MSXs. The standard only says that the
>> interface should use memory addresses to transfer data between CPU and
>> FDC.
>
>Ok, but this means that using DMA in page 1 is against MSX standard, or
>not?

MSX and DMA??? Seems quite impossible to me...

Isn't it?


~Grauw




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Re: 64K VRAM?

1999-03-24 Thread Laurens Holst

>> > > For the most part of diskroms, DMA can be in page 1, because they
have
>> > > access to FDC through addresses 7FF8h-7FFCh and also BFF8h-BFFCh, and
they
>> > > transfer a small routine to F1BFh (or something like that) that
allows a
>> > > disk transfer to happen in page 1.
>> >
>> > Is that MSX-standard or just the case on many MSXs?
>>
>> The standard doesn't say anything about the method that the diskrom
should
>> use. So, it's just the case on many MSXs. The standard only says that the
>> interface should use memory addresses to transfer data between CPU and
>> FDC.
>
>Ok, but this means that using DMA in page 1 is against MSX standard, or
>not?

MSX and DMA??? Seems quite impossible to me...

Isn't it?


~Grauw




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Re: Radarsoft games on harddisk

1999-03-24 Thread Laurens Holst

>> I 'kloten' also a bit with Radx-8 for some time and if I remember correct
>> its memory-requirements were pretty high.
>> 
>
> I don't think so...
>
> Radx-8 was one of my first MSX2 games, and I was able to run it on
>my converted Expert with only 64kb of RAM (non-mapped).

I was talking about free space in the Basic-environment.


~Grauw




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Re: Euhhh..? Building MegaRAM

1999-03-24 Thread Laurens Holst

>>>remove all parts from the ISA card and select a part of it to cut it in
the
>>>shape of a konami-size-cartridge.
>>
>>Easier: take any MSX ROM cartridge. No cutting required, looks better too.
>
>Than I should find some lousy MSX cartridge first, to tear apart.

Eddy II, LOGO, enough of them.



>>Actually, is the size of the connector strips the same for MSX and ISA?
>
>Yes, I checked, same spacing on the strips. (So a part of a Vesa Local Bus
>card can be used aswell.)
>Especially videocards have lots of connector strips on them.

Also same amount of pins?


>>The simplest way to get a mapper is to start with a MegaROM cartridge,
>>those already have a mapper IC inside. This is the way ESE does it.
>>SCC is ideal for this purpose, because after your cartridge is finished,
>>you can run Konami SCC games with SCC music.
>
>I know this, but I'm really very attached to my SCC. Don't want to crack
the
>only one I have open.

I recently bought a F1-spirit cartridge at a stuffed animal fair (what was
'rommelmarkt' again?), for fl.7,50. The reason this price was so low was
that the asshole had cut out the game-ROM. Aargh. But anyway, I have a empty
cartridge with SCC now... Where is the description of this ESE-SCC?


~Grauw




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Re: YES! Harddisk is working! But...

1999-03-24 Thread Laurens Holst

>Laurens Holst wrote:
>
>> The terminator IS needed but some interfaces can handle them even if they
>> are set incorrectly.
>
>Why doesn't it work WITH terminator then?

Well I gues that's the problem, eh?
Working without makes some sense to me, but non-working with... Nah.


~Grauw




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Re: MegaRAM

1999-03-24 Thread Laurens Holst

>So, some people did, and it appears _you_ are wrong. Mapper is and stays
>optional for MSX2... Otherwise: how could it be that there is an MSX2 logo
on
>the VG-8230 and the HB-G900P???

The G900P has no mapper, ok, but the 8230 has! (toch? It was the one with a
128k mapper with 64k mounted in it).


~Grauw




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Re: Radarsoft games on harddisk

1999-03-24 Thread Laurens Holst

>> > I 'kloten' also a bit with Radx-8 for some time and if I remember
correct
>> > its memory-requirements were pretty high.
>>
>> I don't think so...
>>
>> Radx-8 was one of my first MSX2 games, and I was able to run it on
>> my converted Expert with only 64kb of RAM (non-mapped).
>
>Exactly. And, Laurens, why did it work from disk then, _without_ pressing
CTRL
>and _with_ the harddisk and DOS2 online?

>> I don't know <<

I'm only telling you what I remember.


~Grauw



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Re: 64K VRAM?

1999-03-24 Thread Laurens Holst

>> For example, it's very useful for accessing the entire RAM using only the
>> #8000-#BFFF segment.
>
>My MSX2 has 64kb of standard RAM and to access other pages I used to do
>some LDIRs (i.e., I can handle that).

1. LDIRs are slow (OUT takes 11 ticks, LDIRing 16k takes, ummm, a LOT of
ticks)
2. If you do what you suggest then the memory in page #8000 can't be used
for it has to be used as a temp-page. So when 'emulating' 64k of mapped ram
on 64k of non-mapped RAM you get (in the most optimistic case, so only when
using one page for mapping) a VERY slow 48k RAM mapper.


>> And DOS2 *needs* the memory to be mapped in order to manage the RAM
properly.
>
>And does DOS2 work with 64kb of Memory Mapper?

No. Minimal 128k.


~Grauw



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Re: Updated my homepage...

1999-03-24 Thread Laurens Holst

>>Hi, I've updated my homepage with some  Photoshop-graphics, it looks a
>>lot nicer now. Also, I have slightly updated most sections and  I have
>>added a nice HTML to the Images-section and I have updated the 
>>JoyNet-page.
>
>Really great! Nice! Superb! Amazing! By the way, where is this page??? X-D

Drat.
Somehow, I always seem to forget the URL in these kind of messages.

Anyway, it's http://datax.cjb.net/


~Grauw



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Re: 64K VRAM?

1999-03-24 Thread Marco Antonio Simon dal Poz

On Tue, 23 Mar 1999, Alex Wulms wrote:

> ] Ok, but this means that using DMA in page 1 is against MSX standard, or
> ] not?
> I can say three things about  accessing data in page 1:
> 
> 1) It is no problem at all under MSX-DOS when you use address #0005 to access 
> the BDOS.
> 
> 2) It might be a problem when you are working under basic, using  address 
> #F37D to access the BDOS. Though, I'm not sure about that.

Why it might be a problem?

> 3) It is definitely a problem if you call phydio directly, either via 0x144 
> in the BIOS or via 0x4010 in the diskrom.

I ever used this routine calling 0144h or FFA7h and I have never had
problems! What's the matter?

Greetings from Brazil!

-
Marco Antonio Simon Dal Pozhttp://www.lsi.usp.br/~mdalpoz
[EMAIL PROTECTED]   "Apple" (c) Copyright 1767, Sir Isaac Newton

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Remove

1999-03-24 Thread Jeroen Smael

 


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Re: Remove

1999-03-24 Thread Marco Frissen

please people, do _not_ reply to SPAM messages (not even with REMOVE). It
will not work anyway.

Marco
--
Marco F.E.J. Frissen  mailto:[EMAIL PROTECTED]
Philips Digital Video Systems, CryptoWorks.
Building OAN 2.39, Cederlaan 4
5616 SC  Eindhoven, Netherlands
--
Knock, knock. Who's there? Recursion.
Recursion who? Knock, knock...



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Remove

1999-03-24 Thread David Garcia de Dionisio Ramiro




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remove

1999-03-24 Thread Hans Otten



-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: woensdag, maart 24, 1999 09:32 uur
To: [EMAIL PROTECTED]
Subject: HOW TO GET 2 MILLION PEOPLE SEND YOU $ 2.00


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HOW TO GET 2 MILLION PEOPLE SEND YOU $ 2.00

1999-03-24 Thread anybody

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Re: LS-120

1999-03-24 Thread Marco Casali

> Does anyone knows if exists a SCSI-version of the LS-120? 
sure not, I think...
In any case here in Italy the LS120 is in disuse...

Marco


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Re: Radarsoft games on harddisk

1999-03-24 Thread Manuel Bilderbeek

> On Tue, 23 Mar 1999, Laurens Holst wrote:
> 
> > I 'kloten' also a bit with Radx-8 for some time and if I remember correct
> > its memory-requirements were pretty high.
> > 
> 
>   I don't think so...
> 
>   Radx-8 was one of my first MSX2 games, and I was able to run it on
> my converted Expert with only 64kb of RAM (non-mapped).

Exactly. And, Laurens, why did it work from disk then, _without_ pressing CTRL 
and _with_ the harddisk and DOS2 online?

Grtjs, Manuel

PS: MSX 4 EVER! (Questions? See: http://www.faq.msxnet.org/)
PPS: Visit my homepage at http://www.sci.kun.nl/marie/home/manuelbi/ 



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Re: Which games work with START/GETDISK and/or FDDEMU (by Nyyrikki)?

1999-03-24 Thread Manuel Bilderbeek

> On Thu, 18 Mar 1999, Manuel Bilderbeek wrote:
> 
> > I was wondering if anyone could tell me which disk-based games can be
> > run from harddisk with START/GETDISK and which with FDDEMU by
> > Nyyrikki... 
> I use the start disk-image launcher but I haven't any list about the games
> that work fine. This is a too hard work.
> 
> By the way, I don't know FDDEMU. Where can I get it?

Well, I wrote it was by Nyyrikki, so why don't you check his homepage? (URL 
can be found on my bookmarkspage, see signature).

> It work fine on MSX2?

It should, according to the manual.

Grtjs, Manuel

PS: MSX 4 EVER! (Questions? See: http://www.faq.msxnet.org/)
PPS: Visit my homepage at http://www.sci.kun.nl/marie/home/manuelbi/ 



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LS-120

1999-03-24 Thread Ricardo Jurczyk Pinheiro

Does anyone knows if exists a SCSI-version of the LS-120? Thankx.

Ricardo Jurczyk Pinheiro - ICQ UIN:3635907 - [EMAIL PROTECTED]|_Sola  Scriptura |
http://i.am/rjp -M.Sc. Numerical Modelling (hope so!)  |_ Sola Gratia  |
UFF - Niteroi - RJ - Brazil  -  [EMAIL PROTECTED]_|  Sola Fide  |
MSX, ST, B5, X-F, Anime, Christian, Maths, CuD, Linux!_|  Solo Cristi  |
Christian, Rock, Comics, Transformers, and hate M$!  | Soli Deo Gloria |




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