DVK MC1201 (PDP-11 compatible Soviet computer)

[JamesH]

Not an expert here, but if I understand it correctly it should work provided that it supports the implemented devices and you manage to add image to the appropriate slot on the SD card (using sd-store). However, some of those downloads are already included in the disks image. The parent project has detailed description of all devices/drivers and included disk images, in Russian.

Here is a snippet from that doc (from section 10.1):

DM0 RT-11 V5.5 full distro
DM1 XXDP V2.5
DM2 RSX-11M V4.8 full distro
DM3 RSTS/E V10.1
DB0 RSX-11M-PLUS V4.6 full distro
DX0 XXDP with base suite of tests PDP11/70DX1 RT-11 V5.04 minimal
MY0 RT-11 V5.01 with games for ДВК
DK0 RT-11 V5.04
DK1 ФОДОС-ТМОС with test suite
DK2 RAFOS+ v2.1
DW0 RT-11 V5.04 D full distro

As author has warned us, the core is unstable. For me some images boot in the MC1202 core, and some images boot only in pdp2011 core.

[Beiriannydd]

Just want to say a big thank you for this core. I would love to see RSTS/e work. That would be amazing. I've compiled up a version of VTWrap for the HPS that isn't a static binary and attached it here. You can get the source tarball by clicking earlier in time once you have clicked the link for the tarball.

Code: Select all

$ docker run -it --rm -v $PWD:$PWD -w $PWD --platform linux/arm buildpack-deps:sid bash
$ gcc -g -O2 -o vtwrap *.c -lutil

[sharklodon]

This is my alpha version MiSTer port DVK core.
https://github.com/xolod79/MC1201
You can play original Tetris by Alexey Pajitnov!

Hi,

Thanks a lot for this core. It's awesome.

I'm trying last version (pdp2011 256kb BRAM), and I can't mount MY0 disk (selecting bank 1). With version MC1201_20211030 works (doing B and MY0 and bank 1).

Playing Tetris, from my point of view it's not so accurate, because although I selected set "CPU slow:" to "ON", Tetris game runs fast. Could you improve this point?

Thanks and kind regards,
Shark

[sharklodon]

Another issue... Release MC1201_20211030 and "CPU slow:" set to "ON".

INTEGER OVERFLOW

image_2023-04-06_105602839.png (1.12 MiB) Viewed 12876 times

Thanks,
Shark

[eLLuiGi]

Hi,

Is someone can help me running tetris please ?

i mount drive : tetris.dsk and choose bank1

then i type : B
my1

and nothing happened, what should i do ?

THX for your help.

[JamesH]

i mount drive : tetris.dsk and choose bank1

I don't think supplied container initdisk.img has anything in any banks besides bank #0. I'd say, you need to:

1. Mount the initdisk.img container (contrary to what OSD menu says, it's not a disk image, it's a container for all disk data)
2. Make sure you are using bank #0
3. Boot from MY0 (B MY0) and just start tetris by simply typing TETRIS

That's how the boot sequence may look like (using serial console as described above):

Code: Select all

 152462
@B
$MY0

RT-11SJ  V05.01  

?MON-F-Trap to 10 002212

.DIR TETRIS.SAV
 
TETRIS.SAV    29  04-Dec-86      

 1 Files, 29 Blocks
 18 Free blocks

.

[eLLuiGi]

THANK YOU very much it runs fine !!!!

[sharklodon]

THANK YOU very much it runs fine !!!!

Is it running fine? Don't you get INTEGER OVERFLOW when you play Tetris? Which core version are you trying?

Thanks,
Shark

[eLLuiGi]

No integer Overflow, i used last MC1201 core (MC1201_20211030.rbf). A little fast but it's playable, now we wish an elektronika 60 core

24qy.jpg (45.86 KiB) Viewed 11362 times

[sharklodon]

No integer Overflow, i used last MC1201 core (MC1201_20211030.rbf). A little fast but it's playable, now we wish an elektronika 60 core

Have you tried to set "CPU slow:" to "ON"?

Regards,
Shark

[eLLuiGi]

yes of course.

[xolod79]

Release 2023123 with CPU fixes and some slowdowns CPU.
https://github.com/xolod79/MC1201/blob/ ... 231213.rbf

[Alkadian]

Release 2023123 with CPU fixes and some slowdowns CPU.
https://github.com/xolod79/MC1201/blob/ ... 231213.rbf

Cool, many thanks!

[lroby74]

Release 2023123 with CPU fixes and some slowdowns CPU.
https://github.com/xolod79/MC1201/blob/ ... 231213.rbf

Hello,
just for curiosity and if i can ask, why this core is not present on https://github.com/MiSTer-devel section?

It's not an official core?

Thank you

[xolod79]

Release 2023123 with CPU fixes and some slowdowns CPU.
https://github.com/xolod79/MC1201/blob/ ... 231213.rbf

Hello,
just for curiosity and if i can ask, why this core is not present on https://github.com/MiSTer-devel section?

It's not an official core?

Thank you

This core is under development and requires some bug fixes.

[sharklodon]

Would the simh source code be any help? I have a PDP-11 running UNIX 7 under simh with these instructions.

Yes, LSX works!

20210607-2304521.jpg

Image from https://zx-pk.ru/threads/24962-unix-dly ... post794013

Hi,

Which command I need to load LSX?

I'm trying (loading dvk.dsk image first) with:

Code: Select all

 152462
@B
$Y0

But nothing happens.

Thanks and best regards,
Shark

[AmintaMister]

Hi there, thanks for this precious core! The speed of Tetris is still not the original one, too, is too fast, is it possible to slow down it more?

Thanks!

[sharklodon]

Hi there, thanks for this precious core! The speed of Tetris is still not the original one, too, is too fast, is it possible to slow down it more?

Thanks!

Hi,

I opened an issue to xolod79 about it. I'm waiting to have a good answer.

Regards,
Shark

[sharklodon]

Hi @xolod79,

Sorry to bother you about this topic, again!!

Could you please share your code with last commit working at 25MHz instead 100MHz?

I want to compare it with the current code.

Thanks and kind regards,
Shark