I have build my second prototype. The oscillator circuit is a bit picky but otherwise it works. https://www.youtube.com/watch?v=-JZ7SJhLblo https://www.youtube.com/watch?v=p0Y09cNXOKo I am planning one last version that can be jumpered to 2.0, 1.79 and 1.0 MHz clock input. Furthermore, there will be …

@Benedik: That looks pretty cool. Using the AY-3-8913 instead of the AY-3-8910 is a good call. I also made a AY-LPT prototype recently based on the schematics by Tronix: https://dosreloaded.de/forum/index.php?thread/6145-ay-lpt-work-in-progress/ A new version (see attachement) has been ordered an …

[..] I'm not sure if they'll print correctly, but they should be visible on the images at least. In Eagle you should switch the font style of your silk screen from proportional to vector - that way your print on the PCB should look like the way you see it in the Eagle board file. If you have free …

I have similar IBM speakers (connectors on the back are alligned vertical instead of horizontal). Mine are positive center and I use a 12V 500mA PSU. However, meassuring >16V, I probably should replace the PSU.

Sort of... Everything you need is in the attachment above. I can add gerber and BOM as well. I probably going to distribute my surplus PCBs and parts when I find the time and motivation for it, but that may take a while.

Thanks a lot for the driver! I did a quick test with the S2P on a IBM 5160 with NEC V20 and IBM 5155 with 8088 CPU. Space Quest 3 and Codename:ICEMAN worked just fine. Though I wouldn't call it playable. The 1988 X-Mas card had audio only on the first screen, however I am not sure if Ravi's original …

I found several schematics for an AY-LPT device used for example in ZX Spectrum emulation. Maybe this is of intrest for you: LPT-AY by Vitaly Mayatskih & Alexander Kulik LPT-YM by Romanich AY-LPT by Jarek Adamski for ZX Spectrum and Timex Computer Infos by tronix286 Infos by krssh USB-AY by …

Nice review as always. Personally, I have fond memories of The Black Cauldron. I played through the game at the age of around 10 back in 1992 or so. As a non native speaker the missing text parser was a benefit for me back then. Playing with a model F keyboard also helped as the function keys are …

Here are two versions of the SDLPT-adapter by matze drawn in KiCad: Filename SDLPT.jpg File size 1.46 MiB Views 4812 views The contacts of SPI-reader are directly solder onto the board.

The latest tested and released version is indeed on dosreloaded based on shock__'s original design as well as matze79's revision. I was working on a version with integrated R2R-ladder DAC as well, albeit it is neither tested nor has it seen a public release (If anyone is interested sent me a PM). …

You probably can add Ski or Die to your list. If I remember correctly and my entry in matze's spreadsheet is correct you can replace adski.smb with tnski.smb and start the game with "s.exe adlib" to get tndy 3-voice music. Edit: I do not have any problems with port 0xC0 on my 286 PCs. However, to my …

Thanks a lot for the patches, carlostex! And kudos to everyone else who helped. Matze has also started a list for tandy 3-voice compatibility on non-tandy systems. Maybe you find additional games or workarounds in that list.

Thanks a lot carlostex! I am really looking forward to test Arkanoid later today.

Thanks a lot for all those patches! Nice work, and thank you for doing ! Did you manage to get Alleycat running with Tandy/PCjr Sound ? No, i thought that one had already had a patch. The patch you are referring to are probably these by bjt and NRS. While I was able to patch the executable …

I can confirm that this card has an parallel port for a print - just tested it. As for the bracket it is standard size. What I noticed is that the sockets for the RAM-chips and the jumper do look archaic compared to other cards I have lying around. Anyway, thanks again for all the feedback. I guess …

Thanks to everyone for the feedback. I think this card is for conventional memory, though I doubt the 41256 RAM-chips are supposed to be in it. I presume it takes 4132 chips for a total of 64 kb as stated on the sticker on the slot bracket (not shown on the picture above).

Hi everyone, I hope someone can help me to identify this ISA-card, which I got with an IBM 5150. So far I have tried to identify the card using resources like Total Hardware and MinusZeroDegrees to find out what kind of card this is and how to set the dip-switches. Using this card with the pre-set …