Re: Bought these (retro) hardware today
Posted on 2019-10-31, 14:45
McBierle wrote: Got this one latley: Sold by Karstadt at some point. The Owner must have upgraded it to an dx2-66 at some point. What's the second Reset button do?
Re: What retro activity did you get up to today?
Posted on 2019-10-31, 14:43
Caluser2000 wrote: Re-purposed a 1.44 floppy with scratched disk into a 720k floppy. 20191031_212458[1].jpg Edit- The patient booted fine. Does this actually work? I thought the media was different in some way, instead of just having less tracks like a DD 5.25 diskette.
Re: Hardware experts, are we ever going to see replica 3D GPU's?
Posted on 2019-10-31, 14:39
I would love to see a homebrew 3D accelerator, GLiDE or DirectX / OpenGL would be amazing to me. I was impressed to see someone had partially designed a replica of an EMS board, let alone anything close to a video card from scratch! If we could get one that would be ISA compatible and not need a …
Re: Manual required for this XT board
Posted on 2019-10-31, 14:37
Wonder if the BIOS is Phoenix, DTK, or the generic "Turbo XT" clone BIOS. My first one came with Phoenix and my second came with "Turbo XT" Hoping for the DTK so we can get the trilogy!
Re: Manual required for this XT board
Posted on 2019-10-31, 03:00
This looks like a copy of a copy to me. DTK Turbo 640, an extremely common board, has an identical layout. Settings and stuff can be found here: http://www.uncreativelabs.de/th99/m/C-D/30501.htm Manual can be found here: http://www.minuszerodegrees.net/manuals/Turbo-XT%20Main%20Board%20-% …
Re: Hardware experts, are we ever going to see replica 3D GPU's?
Posted on 2019-10-31, 02:56
Saw someone had mentioned that a PGC replica might be possible... Would absolutely love to see this. PGC with a standard VGA video port would be an amazing thing to have, no matter how useless it might have been. I would definitely buy a kit to have one.
Re: Bought these (retro) hardware today
Posted on 2019-10-31, 02:09
They're not totally new, it seems these chips are from 1991. Probably new old stock. Something tells me those aren't date codes, though. 9115TB might be for 15th week 1991, but the original chips say 8103T. 3rd week of 1981? I don't think 1MBit DRAMs even existed in 1981. Probably existed in labs, …
Re: Help finding info on some cards. Warning, pictures
Posted on 2019-10-31, 00:55
Hmm, so I can get it contiguous and get 2432K out of it, but I can't get the last 128K it's supposed to have. I'm going to mess with the mode switches and see how badly I screw it up. Wish me luck. EDIT: wow, flipping one switch fixed it. Can't believe that luck. Switch and jumper settings are: "cas …
Re: Bought these (retro) hardware today
Posted on 2019-10-30, 23:25
Deksor wrote: They're not totally new, it seems these chips are from 1991. Probably new old stock. Something tells me those aren't date codes, though. 9115TB might be for 15th week 1991, but the original chips say 8103T. 3rd week of 1981? I don't think 1MBit DRAMs even existed in 1981.
Re: Help finding info on some cards. Warning, pictures
Posted on 2019-10-30, 22:24
Can you try to switch also all other banks to keep it in one piece, e.g. bank 1 4,375 100111 x11xxx bank 2 4,875 101011 x1x1xx bank 3 5,375 101111 x1xxxx bank 4 5,875 110011 xx11xx bank 5 6,375 110111 With the switch settings you listed, I get the words "IO PARITY ERROR OFFENDING SEG" flashing on …
Re: What retro activity did you get up to today?
Posted on 2019-10-30, 21:37
Went back to the drawing board and fixed the mic issues with the logic board I made for my novelty AM radio and it's now a functioning speakerphone and FM radio (Samsung Tab 6A and Galaxy S7 Edge). In fact, I picked up more FM stations than my car, which is either good or bad. Your car's radio is …
Re: Bought these (retro) hardware today
Posted on 2019-10-30, 21:35
I don't know if it counts as "retro" since they're technically new, but I bought a set of 511000S-10 DRAMs for my 286. It's got 4MB onboard now! https://cdn.discordapp.com/attachments/303395805253992448/639215288906154016/MVIMG_20191030_162018.jpg https://cdn.discordapp.com/attachments/ …
Re: Help finding info on some cards. Warning, pictures
Posted on 2019-10-29, 23:52
Just for kicks, I put all of the switches for "Bank 1" off. Result:
Re: Help finding info on some cards. Warning, pictures
Posted on 2019-10-29, 23:38
If I switched it into a position where it would interfere with other memory, wouldn't it just not appear or cause memory errors? Just to humor you, I tried it anyways. Bank 1 is all 1s: Absolutely no difference. https://cdn.discordapp.com/attachments/303395805253992448/638883770958872606/MVIMG_ …
Re: Help finding info on some cards. Warning, pictures
Posted on 2019-10-29, 21:15
I'm on combination 5. The last 4 have been identical, no change in the configuration shown: 10100 10011 10010 10001 10000 They are having no effect on the starting location of the memory.
Re: Bought these (retro) hardware today
Posted on 2019-10-29, 21:10
Is there a reason to have 100Mbps in an ISA machine? I can't even get my 10Mbps adapter pegged on a Pentium 150, and that's backing up the entire disk over the network! It's some variation on an HP card - It has Token Ring and an RJ45 jack.
Re: Bought these (retro) hardware today
Posted on 2019-10-29, 04:16
Permedia 2 and Vendex card were in a bunch of random junk I bought... not tested yet, I don't have high hopes for them as the rest of the junk were in pretty bad shape. Also this vendex card has some weird bodge on the backside and somebody tried to use it in 16-bit slot as you can see... I don't …
Re: Help finding info on some cards. Warning, pictures
Posted on 2019-10-29, 03:49
Here, I tested the setting to start at "2000" in bank 1. The switches are all the same but bank 1 is now 10100. My motherboard memory covers the first 2MB of RAM for now. Here's the result:
Re: What retro activity did you get up to today?
Posted on 2019-10-28, 01:36
Set up my trusty EGA Wonder card to test out my color monitor some more. Unfortunately, it doesn't seem to work with EGA resolutions (400 lines), but it works BEAUTIFULLY as a normal CGA monitor. Nice monitor! Have you used the EGA wonder driver disk to switch modes on the card? The EGA Wonder 800+ …
Re: What retro activity did you get up to today?
Posted on 2019-10-28, 01:35
Take out the button controller and replace all the components on it, especially any electrolytic capacitors. (even if they look fine) There is a ground reference that is becoming elevated -- this is why it seems to work initially, then quit, and why it can change at random. Before doing that, …
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