Unanswered Questions
355 questions with no upvoted or accepted answers
3 votes
0 answers
147 views
Looking for TRS-80 4P terminal emulation software
I have a TRS-80 4P that works beautifully, and I'd love to set it up as a terminal to other equipment I own (a Linux server, or a PiDP-11), but I'm having trouble finding actual, functional terminal ...
0 votes
0 answers
190 views
MegaTech arcade board - video compatibility with LCDs
Is video output from Megatech Arcade board compatible with contemporary digital monitors (or analog to HDMI upscalers)? My board was working at seller's side (I have a video as a proof), but he tested ...
5 votes
0 answers
356 views
What's the advantage of replacing DOS/4GW with DOS/32A?
Introduction As far as I understand, DOS/4GW was the thing that allowed most games from MS-DOS era to access beyond the 640KB conventional memory limit. (For completeness, there was also EMS and XMS, ...
8 votes
0 answers
338 views
What were the last C & C++ compilers to support automatic MMX vectorisation?
It was suggested to me to move this question from SO to here. There was a relatively short (in tech terms, at least) period during which MMX was the only way to vectorise integer operations on the x86,...
7 votes
0 answers
270 views
Z80 Memory Bank Switching
Edit: sorry it's so many words. I thought it might be helpful to share as much as I have learned so far as possible. Also, here's the link to service manual that includes the schematics. https://www....
2 votes
0 answers
98 views
PDA Acer N50 battery pinout
Could you please summarize pinout (voltage levels and potentially a communication protocol if applicable) of PDA Acer n50 battery? I haven't found any spec in Google and AI provides just nonsense ...
1 vote
0 answers
166 views
IBM S/38 ROS (rom) images availability?
Due to recent references to IBM’s S/38, I was pondering the possibility of doing an emulator. There seems to be adequate hardware information but the roms would be required. Did images of the various ...
1 vote
0 answers
85 views
Minix 1.6 disk images
I'm looking for Minix 1.6 disk images for i386 or i86 (16-bit x86). The disk image can be an installer, a demo floppy, or a HDD image of an already installed system. I know about Minix-386vm 1.6.26.1, ...
6 votes
0 answers
381 views
What happened to the Amoeba operating system?
It's about the distributed Unix-like Amoeba OS developed at the Free University of Amsterdam by Andrew Tanenbaum: Since the late 1990, there seems to have been no measureable progress in development. ...
4 votes
0 answers
200 views
Which game is this?
From Visitors serie, episode 17, minute 27 circa. Willy and young friend are playing a video game, which game is this? Is not Captain commando, is very similar (but is not) to Chicago coin commando, ...
3 votes
0 answers
162 views
Did you use BookManager on IBM big iron for internal documentation
I was trying to remember what I was using back in the early 90s for internal documentation at IBM back in the day. I worked at a site in Tampa that housed 3090 mainframes and was using VM/CMS. Does ...
6 votes
0 answers
221 views
Did any notable 6502 systems coordinate DMA with start of instruction rather than adding delay for possible writes?
An annoying hardware quirk of the 6502 is that while the READY line can be used to extend read operations, it cannot be used likewise for writes. As a result, systems which need to accommodate DMA ...
3 votes
0 answers
508 views
Racing game running on DOS, for up to 4 players, each using a single key for input
I remember a funny DOS game, which I would like to play again. It was able to be played by up to 4 people simultaneously. Each player had exactly 1 key on the keyboard. The only thing required for the ...
6 votes
0 answers
278 views
Was video decoded by the DS Terebi itself or by the Nintendo DS?
The Nintendo DS Digital TV Tuner ("DS Terebi") was an accessory for the Nintendo DS that allowed it to receive 1seg (low-bandwidth mobile video) terrestrial broadcast stations. According to ...
8 votes
0 answers
223 views
Earliest assembler executable supporting the AT&T syntax for the i386
I'm looking for a purchase option or a free download of the earliest assembler executable supporting the AT&T syntax (e.g. movl $42, (%eax)) for the i386. Most likely this will be the COFF i386 ...