PMD85 Core
-
- Core Developer
- Posts: 25
- Joined: Sun Jan 03, 2021 11:17 am
- Has thanked: 3 times
- Been thanked: 44 times
PMD85 Core
Hi all,
I’d like to share my 2nd Verilog project with you (1st was uninteresting led blinking) – FPGA implementation of Czechoslovakian computer called PMD85 for MISTer. It’s still not 100% done, but it works and you can play some games on it. Here is link to short youtube video with basic and some games for demonstration.
https://youtu.be/VVukIzzWiKY
And here is link to my github where you can get latest release, copy it to your MISTer SD card and start as described in read.me
https://github.com/PetrM1/PMD85
Floppy drive is not implemented in this core (yet), but you can use another facility of PMD for loading SW – rom pack – kind of cartridge. In menu you can load rmm file and then reset PMD. Here is link to few rmm files.
https://uloz.to/!sUF8kbQCSu2d/pmd85-2-zip
Enjoy it
Petr
I’d like to share my 2nd Verilog project with you (1st was uninteresting led blinking) – FPGA implementation of Czechoslovakian computer called PMD85 for MISTer. It’s still not 100% done, but it works and you can play some games on it. Here is link to short youtube video with basic and some games for demonstration.
https://youtu.be/VVukIzzWiKY
And here is link to my github where you can get latest release, copy it to your MISTer SD card and start as described in read.me
https://github.com/PetrM1/PMD85
Floppy drive is not implemented in this core (yet), but you can use another facility of PMD for loading SW – rom pack – kind of cartridge. In menu you can load rmm file and then reset PMD. Here is link to few rmm files.
https://uloz.to/!sUF8kbQCSu2d/pmd85-2-zip
Enjoy it
Petr
- tontonkaloun
- Posts: 354
- Joined: Sun May 24, 2020 7:38 pm
- Has thanked: 152 times
- Been thanked: 52 times
- kathleen
- Top Contributor
- Posts: 414
- Joined: Fri Jun 26, 2020 4:23 am
- Location: Belgium
- Has thanked: 226 times
- Been thanked: 135 times
Re: PMD85 Core
Nice to see those kind of unknown computers. Thanks to the great talent of the developers and to the Mister is is accessible to each of us.
Thank you @shark800 for sharing your nice project. Will test it also with a great interest.
Thank you @shark800 for sharing your nice project. Will test it also with a great interest.
かすりん
- Alkadian
- Top Contributor
- Posts: 722
- Joined: Thu May 28, 2020 9:55 am
- Has thanked: 291 times
- Been thanked: 116 times
Re: PMD85 Core
@shark800,
I have just tested this core. It' s very cool! I like it a lot.
I have just tried a couple of games which are Arkanoid and Jet Set Willy (Willie Walker) and they run very well included the sound. I do love the green colour screen! It reminds my first days with my beloved commodore C64.
I have also given you a thumb up on your youtube channel and now I an trying to run a few commands in BASIC 2.
Please let us know if you update it.
I have just tested this core. It' s very cool! I like it a lot.
I have just tried a couple of games which are Arkanoid and Jet Set Willy (Willie Walker) and they run very well included the sound. I do love the green colour screen! It reminds my first days with my beloved commodore C64.
I have also given you a thumb up on your youtube channel and now I an trying to run a few commands in BASIC 2.
Please let us know if you update it.
Re: PMD85 Core
I am thinking of porting next Czech computer, TNS GC but I have problems with floppy WD2797 implementation.
- Threepwood
- Posts: 133
- Joined: Mon May 25, 2020 9:14 am
- Has thanked: 4 times
- Been thanked: 23 times
Re: PMD85 Core
Thank you for making this core. I added it to the list of core name replacements on the Names_MiSTer github.
Is this a specific version that you implemented, like the PMD 85-1?
Is this a specific version that you implemented, like the PMD 85-1?
Re: PMD85 Core
Yeah, there are several versions of PMD85:Threepwood wrote: ↑Tue Jan 05, 2021 3:39 pm Is this a specific version that you implemented, like the PMD 85-1?
1 uses 48K RAM. Tape recorder modulator and demodulator is full hardware. user just sends and reads the UART i8251 and the hardware makes Manchester like modulation... short between edges=the same bit level as before, double between edges=different bit level.
2. better keyboard, tape sender is still full hardwired, tape receiver is bit banged, just like ZX Spectrum has.
2A. Switched from DRAM 4116 to 4164, so 64KB, introduces Full RAM mode,
3. Major rework of Bios and Basic, more possibilities of memory handling.
There was an 'intelligent' disc drive for 2A and 3 models.
-
- Core Developer
- Posts: 25
- Joined: Sun Jan 03, 2021 11:17 am
- Has thanked: 3 times
- Been thanked: 44 times
Re: PMD85 Core
Hi all,
thank you for your positive feedback! I'm glad if this core of an old Czechoslovakian computer entertained you (at least for a while).
@Threepwood this core is PMD85-2a (but full RAM mode is not available in this core yet)
Thank you and enjoy!
Petr
thank you for your positive feedback! I'm glad if this core of an old Czechoslovakian computer entertained you (at least for a while).
@Threepwood this core is PMD85-2a (but full RAM mode is not available in this core yet)
Thank you and enjoy!
Petr
-
- Posts: 1
- Joined: Mon May 25, 2020 11:29 pm
- Has thanked: 1 time
Re: PMD85 Core
I just discovered this core and it was a pleasant surprise, I have tried it and it is great, thank you very much.
- LamerDeluxe
- Top Contributor
- Posts: 1179
- Joined: Sun May 24, 2020 10:25 pm
- Has thanked: 821 times
- Been thanked: 264 times
Re: PMD85 Core
I just discovered it as well. Awesome job! Another addition to the MiSTer retro museum. I am a quarter Czech, so that makes it even more interesting to me
-
- Core Developer
- Posts: 25
- Joined: Sun Jan 03, 2021 11:17 am
- Has thanked: 3 times
- Been thanked: 44 times
Re: PMD85 Core
Hi everyone,
new release of PMD85 mister core is available. In new version load sw (games) via (ADC) line in and mouse were implemented.
Details how to install new release, use both features as well as release itself is available on my github https://github.com/PetrM1/PMD85
And here is link to a zip file with great minesweeper game transformed into rmm file and Saboteur game transformed into WAV file - https://ulozto.cz/file/isVhMayAbcaz/pmd85-games-zip
I'd like to thank to Libor for transforming minesweeper for me. And I have to say he has much more nice games - please visit his pages https://www.pmd85.cz/ - with google translator who can't read in Czech
Petr
new release of PMD85 mister core is available. In new version load sw (games) via (ADC) line in and mouse were implemented.
Details how to install new release, use both features as well as release itself is available on my github https://github.com/PetrM1/PMD85
And here is link to a zip file with great minesweeper game transformed into rmm file and Saboteur game transformed into WAV file - https://ulozto.cz/file/isVhMayAbcaz/pmd85-games-zip
I'd like to thank to Libor for transforming minesweeper for me. And I have to say he has much more nice games - please visit his pages https://www.pmd85.cz/ - with google translator who can't read in Czech
Petr
- Alkadian
- Top Contributor
- Posts: 722
- Joined: Thu May 28, 2020 9:55 am
- Has thanked: 291 times
- Been thanked: 116 times
Re: PMD85 Core
Great, many thanks for the new release. I will check it out shortly.shark800 wrote: ↑Sun Sep 26, 2021 8:30 am Hi everyone,
new release of PMD85 mister core is available. In new version load sw (games) via (ADC) line in and mouse were implemented.
Details how to install new release, use both features as well as release itself is available on my github https://github.com/PetrM1/PMD85
And here is link to a zip file with great minesweeper game transformed into rmm file and Saboteur game transformed into WAV file - https://ulozto.cz/file/isVhMayAbcaz/pmd85-games-zip
I'd like to thank to Libor for transforming minesweeper for me. And I have to say he has much more nice games - please visit his pages https://www.pmd85.cz/ - with google translator who can't read in Czech
Petr
Re: PMD85 Core
Thank you for the update. Loading from ADC works very well.shark800 wrote: ↑Sun Sep 26, 2021 8:30 am Hi everyone,
new release of PMD85 mister core is available. In new version load sw (games) via (ADC) line in and mouse were implemented.
Details how to install new release, use both features as well as release itself is available on my github https://github.com/PetrM1/PMD85
Petr
- Moondandy
- Top Contributor
- Posts: 535
- Joined: Mon May 25, 2020 2:14 am
- Location: Edinburgh, Scotland
- Has thanked: 32 times
- Been thanked: 97 times
Re: PMD85 Core
Thanks for releasing this into Main!
You should pop a post in this thread so that it appears in the Discord news channel feeds and everyone knows that you have released your core, so nobody misses it:
viewtopic.php?f=2&t=147
You should pop a post in this thread so that it appears in the Discord news channel feeds and everyone knows that you have released your core, so nobody misses it:
viewtopic.php?f=2&t=147
-
- Core Developer
- Posts: 227
- Joined: Thu Jun 04, 2020 1:43 pm
- Has thanked: 41 times
- Been thanked: 64 times
Re: PMD85 Core
I tried this core for the first time yesterday.
It seems to work great. I knew nothing at all about this machine beforehand, so thanks for bringing another obscure (to me) system to MiSTer!
D.
It seems to work great. I knew nothing at all about this machine beforehand, so thanks for bringing another obscure (to me) system to MiSTer!
D.