MiSTer FPGA Forum

xolod79

Soyuz-Neon PC-11/16 (UNEON). Soviet Personal computer with an advanced graphics subsystem, multitasking and compatibility with the PDP-11 architecture. Core for MiSTer and MiST. github.com/xolod79/UNEON For the IDE-HDD to work, you need to replace Main_MiSTer main binary from this repo! FDD not working yet. Spec: CPU 1801ВМ2 16bit, 8MHz, PDP-11 co...

xolod79

Release 2023123 with CPU fixes and some slowdowns CPU. https://github.com/xolod79/MC1201/blob/master/releases/MC1201_20231213.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.

xolod79

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

xolod79

Made a test core.

xolod79

Working on the core of one computer and using PIC - i8259a, taking it from the ao486 project encountered an error in its operation. The error manifests itself in POLLED polling mode of the PIC (I don't know if it is used in the IBM PC), in this mode the Interrupt Mask Register (IMR) is not returned. assign io_readdata = (polled) ? { interrupt_do, 4...

xolod79

I want to express my gratitude to the author of this kernel! This is a job well done. The only thing I would like to see is ethernet which is brought to hps via the TAP interface in linux, but this will require a special driver. Good idea. I'll explore this way also. Is this it yet done on any core? The "driver" is done in PDP assembly. ...

xolod79

I want to express my gratitude to the author of this kernel! This is a job well done. The only thing I would like to see is ethernet which is brought to hps via the TAP interface in linux, but this will require a special driver. Good idea. I'll explore this way also. Is this it yet done on any core? The "driver" is done in PDP assembly. ...

xolod79

I want to express my gratitude to the author of this kernel! This is a job well done. The only thing I would like to see is ethernet which is brought to hps via the TAP interface in linux, but this will require a special driver.

xolod79

I got the impression that pdp-11 for MiSTer does not really need anyone. And most of this thread is a discussion of licenses, not the PDP-11 itself. It is sad.

xolod79

Have you tried replacing electrolytic capacitors?

xolod79

Dear JamesH. As far as I know core BK0011M supports HDD drives on SMK-512 in a very limited way. There, the interception of the call to ROM procedures for working with HDD is implemented. And the hardware of the SMK-512 controller itself has not been implemented. Because of this, programs that work with the disk directly bypassing the ROM do not wo...

xolod79

New test build with PDP2011 CPU 256kb and RH70 drives.
https://github.com/xolod79/MC1201/blob/ ... 211105.rbf

xolod79

cathrynmataga wrote: ↑Tue Nov 02, 2021 9:31 pm Is anyone running RT-11? That's closer to my experience with old DEC.

yes, RT-11 works in the current release.
Also plans to port the processor from the PDP-2011 project with a 22-bit address space and MMU, which will allow to run RSX-11M, RSTS / E and UNIX

xolod79

Thanks a lot for your work, this is great! I do have one question not related to SD cards. How do we use the core's UART? After using "uartmode 2" there are some meaningful bits avaiable via ttyS1, but it looks like some phantom input (?) is generated most of the time when using microcom (ssh to mister from xterm set to vt52 profile), as...

xolod79

Today's update works with disk images from the file system. A dedicated SDCARD is no longer needed.
https://github.com/xolod79/MC1201/blob/ ... 211030.rbf
While the core is not stable. WIP!

xolod79

Yes, I updated this project https://github.com/xolod79/MC1201/blob/ ... 211022.rbf you also need to update the image to sd-card. But unfortunately the problems with sd-card have not been solved yet. I will try to solve them.

xolod79

Compiled by RBF https://github.com/xolod79/hp300_MiSTer ... 210802.rbf.
It starts up, but doesn't figure out how to start BASIC from ROM. Maybe someone knows?
In general, the project is very interesting! I wanted the author to continue to develop it. I think the main problem is the lack of an MMU for the 68030.

xolod79

I saw an interesting new project in the next branch of this forum.

https://github.com/AmicableComputers/wf68k30L

xolod79

yes GUS would be very nice to get on ao486

xolod79

pgimeno wrote: ↑Wed Jun 09, 2021 7:18 pm Thanks, I've done that and I managed to get a # prompt, but then it crashes (returns to the @ prompt after printing an hex number) at anything I attempt to do. Subsequent boots don't work, as if the SD card got corrupted. Rewriting it I can try again, but with the same result.

did you get LSX running?

xolod79

@Grabulosaure
Hello!
Have news about your SPARC core?

xolod79

Thanks, I've done that and I managed to get a # prompt, but then it crashes (returns to the @ prompt after printing an hex number) at anything I attempt to do. Subsequent boots don't work, as if the SD card got corrupted. Rewriting it I can try again, but with the same result. Simple poweroff and poweron Mister and try again. Curently core unstabl...

xolod79

Image from https://zx-pk.ru/threads/24962-unix-dlya-uknts!!!.html?p=794013&viewfull=1#post794013 Thanks. How do you boot it? I've tried with B RK0 and I get a : prompt but entering lsx as in the picture doesn't do anything, the : prompt reappears. Entering B DX0 or B MY0 seems to hang with the Disk LED on, as if waiting for a disk to be ready ...

xolod79

pgimeno wrote: ↑Mon Jun 07, 2021 10:45 am 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 (71.12 KiB) Viewed 19416 times

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

xolod79

Would the simh source code be any help? I have a PDP-11 running UNIX 7 under simh; I used these instructions: http://www.jdpressman.com/2015/11/27/how-to-emulate-unix-v7-using-SIMH-%282015%29.html This article describes a pdp-11/45 that supports 256KB of memory. The simh sources won't change the situation. I will try running LSX http://www.mailcom...

xolod79

Hi if this Soviet clone is anything like the original, have a look at this very interesting youtube video about booting BSD Unix on a PDP-11. https://www.youtube.com/watch?v=gYng1yypNCA Now the project has implemented LSI-11 type processors, which can only address 64Kbytes. To run 2.9BSD, the minimum required 192KB, and for 2.11bsd 1MB. In the fut...

xolod79

NML32 wrote: ↑Sun Jun 06, 2021 9:22 pm I didn't have any luck booting from my 1GB SD card. The drive light just stayed on. No issues using my SanDisk Ultra 128GB SD card.

Yes, supported SDHC card, SDSC not supported.

xolod79

This is my alpha version MiSTer port DVK core.

https://github.com/xolod79/MC1201

You can play original Tetris by Alexey Pajitnov!

xolod79

Hello, Petr. UART ports are connected to uart in Linux : ttyS0 and ttyS1 You can see their status in the Linux Mister console # cat /proc/tty/driver/serial there is also a script # /usr/sbin/uartmode that controls different modes of operation, these are PPP, MIDI .. If # cat /dev/ttyS1 cat: /dev/ttyS1: Resource temporarily unavailable simple run # ...

xolod79

PPC will allow you to see the Amiga PPC demoscene, we already have RTG.

MiSTer FPGA Forum

Search found 38 matches

Soyuz-Neon PC-11/16 (UNEON) Core

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: PIC (i8259a) - Polled mode IMR not returned

PIC (i8259a) - Polled mode IMR not returned

Re: PDP2011 port to MiSTer FPGA

Re: PDP2011 port to MiSTer FPGA

Re: PDP2011 port to MiSTer FPGA

Re: PDP2011 port to MiSTer FPGA

Re: Sega Saturn Core as Useful Information to Repair Real Saturn Consoles?

Re: BK 0011M - SMK-512 setup?

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: 32-bit cores

WF68K30L

Re: Professor wants GUS in FPGA

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: 32-bit cores

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

Re: DVK MC1201 (PDP-11 compatible Soviet computer)

DVK MC1201 (PDP-11 compatible Soviet computer)

Re: UART from/to core

Re: Lets actually try Hybrid Emulation