SID LPT (and maybe SSI 2001 LPT.. :-) ) \ VOGONS

SID LPT (and maybe SSI 2001 LPT.. :-) )

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First post, by matze79

Posted on 2021-01-18, 11:36

matze79 Offline

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i started some time ago to design a SID LPT Testing Plug ,

lptsid.jpeg

but Kanpai from dosreloaded.de got the same idea almost same time and already ordered some PCBs.
So he send me one.
I added a DC-DC Booster for real SID IC.

Both are based on the Design from:
http://www.loper-os.org/vintage/parallelsid/parasid.html

sid_lpt1.jpeg

sid_lpt2.jpeg

sid_lpt3.jpeg

But it seems Vice has some Bugs in its LPT SID / PARSID Support.
If it gets correctly detected it will crash with Memory Corruption.

I will report back with more News when we get Vice running correctly!

Trying to get DOS Version running and Compilers for MS-DOS.

Stay tuned!

https://www.retrokits.de - blog, retro projects, hdd clicker, diy soundcards etc
https://www.retroianer.de - german retro computer board

Reply 1 of 6, by Benedikt

Posted on 2021-01-18, 12:45

Benedikt Offline

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There will certainly be opportunities for future collaboration on the software side.

Reply 2 of 6, by matze79

Posted on 2021-01-19, 16:53

matze79 Offline

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Thanks, that would be nice.

there will be still some changes, like allowing select different Frequencys to match ntsc/pal systems.
Had no time to continue yet.
i`m struggling to get older versions of vice to compile.

https://www.retrokits.de - blog, retro projects, hdd clicker, diy soundcards etc
https://www.retroianer.de - german retro computer board

Reply 3 of 6, by matze79

Posted on 2021-01-20, 21:21

matze79 Offline

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Still no success with Vice, it only access parallelport one time during detection, then nothing anymore.
Parsid is selected, and its not playing over Soundcard..

No Action for CE/Adress Latch at all haha

i hoped i could avoid making a testing program, but it seems i will not.

parsid_y.jpeg

parsid_x.jpeg

https://www.retrokits.de - blog, retro projects, hdd clicker, diy soundcards etc
https://www.retroianer.de - german retro computer board

Reply 4 of 6, by matze79

Posted on 2021-01-21, 21:17

matze79 Offline

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Location: Germany, Frankonia

https://youtu.be/eqFdJ_1xA7M

works.. First Tones !

https://www.retrokits.de - blog, retro projects, hdd clicker, diy soundcards etc
https://www.retroianer.de - german retro computer board

Reply 5 of 6, by AntiRevisionism

Posted on 2021-01-22, 00:00

AntiRevisionism Offline

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Great work and glad to see progress so quickly. I would love to see an SSI 2001 LPT one day 😀

Reply 6 of 6, by matze79

Posted on 2021-05-13, 17:04

matze79 Offline

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Posts: 2947
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Location: Germany, Frankonia

Trying to get Vice Build on djgpp, no success so far yet.
Its needed to modify the Auto Detection Routine.
There a lot of issues with DJGPP 😒, specially with building needed dependencies.

-> Detection Fine with ARMSID on LPTSID
-> Detection fails (often) with MOS6581
-> Plugging ArmSID first, then removing it and change it with MOS6581 Plug -> Vice plays just fine.
-> Adding Bus Driver -> also did not help with detection.

https://www.retrokits.de - blog, retro projects, hdd clicker, diy soundcards etc
https://www.retroianer.de - german retro computer board

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