Hi
How is additional port on the msx realized via the
slotexpander. I think the brazilian msx vdp upgrade did this?
Thanks
JP
Hi,
You have to explain what you mean with 'additional port'.
A real slot expander expands a primary slot to max 4 expanded slots. In
there memory can be switched to the z80 by the slot hardware.
This is memory space, not i/o space as is used for i/o ports. These are
limited to 256 in total
On Tuesday 05 June 2001 18:51, you wrote:
Wasn't there a plan for this? The .msx format? A discussion WHICH
COMPLETELY DIED WITHOUT ANY RESULT! :-(
Please be more patient. Standardising and then implementing takes a lot of
time. MSX developers have studies or jobs and other projects going,
Hi,
I have bought secondhand a Toeprom eprom programmer.
Looks nice, not so good and not uptodate manual.
Not a high quality program inside, but I have the MAD/Dick van Vlodrop
version (including sources) on disk. (will come to
www.geocities.com./msxhans, mail me if you want it now)
But here
On Wed, 6 Jun 2001, Hans Otten wrote:
[... eprom programmer ...]
But here my question:
There are four jumpers on the top marked 27512, 32 etc.
Does anyone know what the function and settings of these jumpers are?
To me, it seems to be an eprom selection. You should connect the jumper in
the
I have a similar problem to Marco, but even somewhat worse. I have what is,
I believe, the only MSX2 computer currently in Canada. ^.^;; As a result,
MSX software and hardware is basically non-existant here, making buying
actual copies of games and so forth not the simplest of things for me.
Brendan Cross wrote:
I have a similar problem to Marco, but even somewhat worse. I have what is,
I believe, the only MSX2 computer currently in Canada. ^.^;; As a result,
MSX software and hardware is basically non-existant here, making buying
actual copies of games and so forth not the
Hi all,
I'm really trying to get some extra memory for turboR ST users, because
they can't use GEM v0.7 at all. The problem is the 64kB which is used for
R800 DRAM mode located above the DOS2 system area.
My idea is to:
1. switch to R800 ROM mode
2. copy the DOS2 system area to the upper 2
Hi
Say for example I want to add another vdp etc and
access it via a port number in() out () how is this done in
hardware.
JPOn 6 Jun 2001 19:15:14 +0200, [EMAIL PROTECTED]
(Hans Otten) wrote:
Hi, You have to explain what
you mean with 'additional port'. A real slot expander expands a
The Z80 has 65536 I/O addresses, not 256. But just like its bigger
cousins, the x86 series from Intel, they are not directly accesible. If
I'm not mistaken you have to use the BC register to access ports above
0xff (of course you can also use it for the first 256 ports, but what use
would that
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