Re: Code listings for the I4004 or I4040

On Fri, 18 Mar 2016, Brent Hilpert wrote: I have two items which use 4004 procs, one is a Prolog M900B E/PROM programmer ca. 1979. The manual includes the firmware source. (Somewhat bizarrely, it's typed/printed onto coding forms.) Here are the first two pages (photos, not scanned). We

Re: PDP-11/05-NC with M9301?

2016-03-17 18:50 GMT+01:00 Paul Birkel : > 11/70: M9301-YC -- E-F Slot #1. It's specially wired like everything > else in Slot #1 through Slot #39. SPC doesn't start until Slot #40. M9302 > goes in Row A-B Slot #44. > > KW11 (clock) goes adjacent in Row D Slot #1. > > Row C

Re: Honneywell multics? from panels. the inline phots in this message folks -smecc

>> Also, Multics stacks grow upward -- great for protection against >> buffer overrun attacks, but a pain in a modern architecture. > Sorry, I don't follow that? Why does the stack growth direction make > a difference? It's just a convention, isn't it, which direction is > 'push' and which is

Re: Code listings for the I4004 or I4040

On Thu, Mar 17, 2016 at 1:43 AM, Eric Smith wrote: > > Unfortunately I do not, but I've recently become interested in such > things, as I have received from a friend's estate an old board from an > embedded system (possibly a cash register) which has a 4040 CPU. > Photos here:

Connecting a Cambridge Z88 to the Internet

I've been asked about doing this for an exhibition. >From some cursory Googling, it seems that the Z88 has a terminal emulator, and equipped with a suitable serial cable, you could just run a cable to a host device with an Internet connection and have a text-only terminal session fairly readily.

Re: PDP-11/05-NC with M9301?

> > This means that you not have the terminator in the last slot of the bus, > > right? Since your bus is so short it won't probably matter. > > > > > Dave McGuire and I went over the system and concluded the same, basically > it's either put it there or I can't have an RL02 drive controller

Re: ISO: VAX-11/75

> My call for a VAX-11/750 a month or so ago actually bore some fruit > (locally, even!) and as of a couple of weeks ago, I now have a very > nicely configured 11/750 system taking up most of the basement. Some guys have all the luck. Now if anyone in the Southeast has a 750 they're no longer

Re: Code listings for the I4004 or I4040

I find it interesting that most applications seem to use a small amount of RAM but a lot of ROM. When the 4004 was designed, it had the extra pins assigned to select more banks of RAM instead of ROM. By the 4040 time they added more ROM select controls. I don't think I've ever seen all possible

Re: MEM11A Update

On Thu, Mar 17, 2016 at 3:35 PM, Guy Sotomayor wrote: > I’m planning on doing a 4 layer board so I can avoid having routing issues > due to 3 different > power supply voltages (yea, modern low voltage design meets 5v). I haven’t > done a 4 layer > design before, so I’m in

Re: Honneywell multics? from panels. the inline phots in this message folks -smecc

> From: Mouse > Well, what was the largest virtual memory space available on various > machines? I have thought, on occasion, about simulating a segmented machine on a non-segmented machine, i.e. one with large unidirectional addresses (segmented being a bi-directionally addressed

Baydel Unibus disk systems

Folks, I've found something I forgot I had; a Baydel Unibus disk controller. At one time I had 3 or 4 of these in complete systems but carelessly managed to trade them all away(!) - except this one board. They were all identical; a pdp-11/04 with a quad Unibus Baydel disk controller hooked up to

Re: Code listings for the I4004 or I4040

There is a 4201 by national semi on ebay. I bought a 4201 recently for around $10. I'm mostly looking for a 4040. I have a 4289, three 4002-1s and two 4002-2s. I'd like to setup the 4289 such that I have a boot ROM and then shadow it into RAM. I'd then disable the ROM and run on RAM only. The 4040

Re: Connecting a Cambridge Z88 to the Internet

>I'd be fascinated to hear of any gotchas if you were curious enough to >give it a go. My skills at things like making serial cables are very >minimal indeed. I know exactly where my Z88 and power supply are, serial cable and modem not a problem. But! Dial-up services? I could RS232 onto a VAX...

Re: Connecting a Cambridge Z88 to the Internet

> On 18 Mar 2016, at 14:04, Liam Proven wrote: > > I've been asked about doing this for an exhibition. > > From some cursory Googling, it seems that the Z88 has a terminal > emulator, and equipped with a suitable serial cable, you could just > run a cable to a host device

Re: Code listings for the I4004 or I4040

Eric The answer is no and yes. You can not use the normal RAM instructions with the 4289. Still, one can have RAM through the 4289. It would have no status RAM like the 4002s but for a program that is written to use conventional RAM through the 4289, it has no more overhead than regular 4002s,

Re: Honneywell multics? from panels. the inline phots in this message folks -smecc

>> As for buffer overruns, the point there is that a buffer overrun >> clobbers memory addressed higher than the buffer. If the stack >> grows down, this can overwrite stack frames and/or callers' locals. >> If the stack grows up, all it can overwrite is locals for the >> current frame and unused

Re: PDP-11/05-NC with M9301?

> > > > If one read notes in the PDP-11/04 printset it says: Do not insert a M930 > or M9302 in a MUD slot. Only in the Unibus slots or you will have short > circuit. On the other hand it does not say that the M9301 (or M9312) cannot > be installed in a unibus slot. It recommends that those boards

Re: OKI if800 CP/M

On Mar 16, 2016 20:47, "Chuck Guzis" > I rarely keep originals, but copy them and return them to the original owner. If you're interested, I can dig a disk or two out and list the contents. Sure, or a 22disk image, if you think you have the same disk I do. Just something to check against to see

RE: ACE Key codes (xx2247 etc.)

FYI - the key codes I measured previously for Data General and HP have been cut, tested, and verified. Amazingly, my measurements were correct. So to summarize: XX2247 Code: 5173757 Use: DEC PDP-8 (all varieties), PDP-11 machines that do not use an ACE blank (11/24, 11/44) XX2065 Code: 1353757

Re: Code listings for the I4004 or I4040

On 2016-Mar-17, at 10:11 PM, dwight wrote: > Also, I've found a source for 5.185MHz crystals. > ACE Components has some. They are in San Jose, on Oakland Rd. > Dwight I have two items which use 4004 procs, one is a Prolog M900B E/PROM programmer ca. 1979. The manual includes the firmware

RE: Code listings for the I4004 or I4040

-Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Brent Hilpert Sent: Friday, March 18, 2016 5:41 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: Code listings for the I4004 or I4040 . I had a failed 4201 chip (clock gen), it

Honneywell multics? from panels. the inline phots in this message folks -smecc

> From: David Bridgham > how the GE processor mapped each segment to physical memory on its own > while the x86 maps the segments into a single 2^32 byte linear address > space first and then maps that to physical memory. Oh, right, I remember there was a 4GB limit on physical

LAST CHANCE for VCF East exhibit registration

Everyone, There is less than one month until showtime. I'm declaring noon ET tomorrow as the final deadline for registering exhibits. Exhibits so far: http://vcfed.org/wp/festivals/vintage-computer-festival-east/vcf-east-exhibits/ Exhibit registration:

Re: Connecting a Cambridge Z88 to the Internet

On 18 March 2016 at 15:09, Austin Pass wrote: >> On 18 Mar 2016, at 14:04, Liam Proven wrote: >> >> I've been asked about doing this for an exhibition. >> >> From some cursory Googling, it seems that the Z88 has a terminal >> emulator, and equipped with a

Re: anyone have a working RV-20 or RV-64?

On 3/18/16 9:15 PM, Paul Anderson wrote: I have a RV20 somewhere. Are you in a big hurry? On Fri, Mar 18, 2016 at 6:48 PM, Al Kossow wrote: we have a bunch of optical packs at CHM that we'd like to archive does anyone have a working setup? no, but I have nothing with

Re: PDP-11/05-NC with M9301?

On Thu, Mar 17, 2016 at 1:59 PM, Mattis Lind wrote: > 2016-03-17 18:50 GMT+01:00 Paul Birkel : > > > 11/70: M9301-YC -- E-F Slot #1. It's specially wired like everything > > else in Slot #1 through Slot #39. SPC doesn't start until Slot #40. > M9302 >

Re: Code listings for the I4004 or I4040

On Tue, Mar 15, 2016 at 10:54 PM, dwight wrote: > I've been scanning the web in search of any code listings for these > processors. [...] > Does anyone have a stash of paper tapes or listings? Unfortunately I do not, but I've recently become interested in such things, as I

Re: where I've landed

Looks great Ian - a lot more interesting than my attic! Although I do have the Lake District to play in when I leave work. Congratulations. All the best Mark On 17 Mar 2016 03:52, "Ian S. King" wrote: > Sorry, Sergio, can't quite swing that. :-) > > On Mon, Mar 14, 2016 at 12:41

RE: PDP-11/05-NC with M9301?

11/70: M9301-YC -- E-F Slot #1. It's specially wired like everything else in Slot #1 through Slot #39. SPC doesn't start until Slot #40. M9302 goes in Row A-B Slot #44. KW11 (clock) goes adjacent in Row D Slot #1. Row C Slot #1 is empty. Rows A-B Slot #1 take the FP & CP maintenance

Re: Code listings for the I4004 or I4040

Hi The 4289 can be used for RAM with the 4040, using the WPM and RPM. It can be used on the 4004 but it is limited to WPM only. The RAM can then be use for both program and for data. I don't recall if the 4008/9 support the RPM but I can look that up later tonight. It sounds like you may have a

Re: Connecting a Cambridge Z88 to the Internet

On 18 March 2016 at 15:27, Adrian Graham wrote: > I know exactly where my Z88 and power supply are, serial cable and modem > not a problem. But! Dial-up services? I could RS232 onto a VAX... Since I've been playing with my new Raspberry Pi 3 today, I was thinking one

Re: NetBSD TK70 question

On 17 March 2016 at 11:34, Christian Corti wrote: > I'm not sure where I should start asking, so I'm starting here ;-) > > I have a problem reading TK70 (and probably TK50) tapes in NetBSD 3.0 on a > MicroVAX II. There is absolutely no way of reading a single

Re: Code listings for the I4004 or I4040

On Thu, Mar 17, 2016 at 9:04 AM, Kyle Owen wrote: > Wow, an engineering sample 4040. Very nice. Highly sought after by those > CPU collectors out there. I noticed that it was an engineering sample, but hadn't really thought about that making it more valuable to collectors.

Re: Code listings for the I4004 or I4040

On Thursday (03/17/2016 at 10:04AM -0500), Kyle Owen wrote: > On Thu, Mar 17, 2016 at 1:43 AM, Eric Smith wrote: > > > > Unfortunately I do not, but I've recently become interested in such > > things, as I have received from a friend's estate an old board from an > > embedded

PDP-11/05-NC with M9301?

I was thinking of using a M9301 board to get a console emulator and some different bootstraps with the 11/05. But can I just put the M9301 in the slot where the M930 normally goes? Slot 4 AB. >From looking in the schematics I get that: 1. The bus grant pull ups on the M9301 is through jumpers.

Re: Code listings for the I4004 or I4040

On Thu, Mar 17, 2016 at 1:18 PM, dwight wrote: > The 4289 can be used for RAM with the 4040, using the WPM and RPM. It can be > used > on the 4004 but it is limited to WPM only. I know about that; what I was asking about was whether the 4289 (or 4008/4009) could replace

Re: Resistor/Fuse replacement (DEC H7104-D)

On 18/03/2016 02:11, "Josh Dersch" wrote: >> However the only ones they sell are 5% tolerance, ie brown-black-gold-gold >> not brown-black-gold-silver + blue, but the technical chap I spoke to seemed >> certain these would be ok. I bought 5 just in case. >> >> Onecall are

Re: Honneywell multics? from panels. the inline phots in this message folks -smecc

> I have thought, on occasion, about simulating a segmented machine on > a non-segmented machine, i.e. one with large unidirectional addresses > (segmented being a bi-directionally addressed machine) - [...] Hm, "unidirectional" and "bidirectional" are terms I'm having trouble figuring out the

Re: DEC RK05 Emergency Retract Batteries

On 16.03.2016 09:12, Christian Corti wrote: On Tue, 15 Mar 2016, Paul Koning wrote: From the various comments, it sounds like NiMH is a useable substitute. On the other hand, NiCd batteries are still readily available. Yes, but NiCd cells really don't like being charged only and never

Resistor/Fuse replacement (DEC H7104-D)

Hi all -- Yesterday I replaced the dead 2N6547 transistor in the H7104 and fired 'er up again. Same exact results. (The timbre of the power supply whine may have changed slightly, it's hard to tell). So, back to the drawing board. I tested the replacement transistor after power-up and it

Re: Honneywell multics? from panels. the inline phots in this message folks -smecc

> From: Charles Anthony > Slightly at cross purposes here; I was speaking of porting Multics; you > are speaking of writing a Multics like OS. I was opining that I don't > think that porting would work due to Multics reliance on very specific > VM features. Yes; my un-stated

Re: Baydel Unibus disk systems

On Fri, 18 Mar 2016, Mike Ross wrote: I just have the controller board; I don't have any of the hard drives left. All I remember is the disk was an 8" and the interface is a single 40-pin cable; so not SMD and not SCSI. Far too early for IDE or ATA. Any suggestions for what the interface might

Re: PDP-11/05-NC with M9301?

> > > > > I am not 1/2 as knowledgeable as others here, but what comes to mind is > "backplane change", You mean that I have to do modifications to the backplane. No, that is not what I want... > I think you'd leave the M930 where it is and on the 2nd > backplane segment install the M9301.

Re: Resistor/Fuse replacement (DEC H7104-D)

Glad this came back up. Was any consensus achieved, regarding the use of `flameproof` resistor types as direct substitutes for designated "fusible resistors"? On Thu, Mar 17, 2016 at 7:44 PM, Adrian Graham wrote: > On 17/03/2016 22:46, "Vincent Slyngstad"

Re: OKI if800 CP/M

On 03/16/2016 07:07 PM, Jason T wrote: On Mar 16, 2016 20:47, "Chuck Guzis" I rarely keep originals, but copy them and return them to the original owner. If you're interested, I can dig a disk or two out and list the contents. Sure, or a 22disk image, if you think you have the same disk I

Re: Honneywell multics? from panels. the inline phots in this message folks -smecc

> From: Mouse > As for buffer overruns, the point there is that a buffer overrun > clobbers memory addressed higher than the buffer. If the stack grows > down, this can overwrite stack frames and/or callers' locals. Oh, right. Du! Buffers typically grow upward, no matter

Re: PDP-11/05-NC with M9301?

> > Yes. That is pretty clear from pin assignment list that bad things WILL > > happen if you try to install a Unibus-slot-compatible device into a MUD > > slut. But the vice-versa? Installing a MUD-compatible device into a > > Unibus-slot? > > Most of those are memory boards and from my