Search found 18 matches
- Thu Oct 31, 2019 4:09 pm
- Forum: PDP-11 Assembly Programming
- Topic: PDP-11
- Replies: 24
- Views: 27352
Re: PDP-11
Glad I was able to help :) CPU has another limitation - it has no access to bitplane 0 ("blue"). So I modified the example a bit to make the background black. It sets the resolution to 320 dots per line instead of 640, as well. (without changing addresses of each line in the LPT, so there ...
- Thu Oct 31, 2019 3:51 pm
- Forum: Show and Tell
- Topic: A port of ChibiAkumas to Elektronika MS-0511
- Replies: 2
- Views: 3582
A port of ChibiAkumas to Elektronika MS-0511
Inspired by port of game Highway Encounter to the Elektronika MS-0511(UKNC) I wanted to port some classic game to the machine too. After some research, it was clear that the best video mode to use is 4-color and 320 pixels per line. Then after some more research, I concluded that I should choose a g...
- Mon Oct 28, 2019 9:43 pm
- Forum: PDP-11 Assembly Programming
- Topic: PDP-11
- Replies: 24
- Views: 27352
Re: PDP-11
BTW, the example above uses indirect access to video ram which is rather slow but simple.
It is possible to use CPU ram as video ram but it more complicated since CPU has no access at all to the line parameters table(LPT).
It is possible to use CPU ram as video ram but it more complicated since CPU has no access at all to the line parameters table(LPT).
- Mon Oct 28, 2019 9:32 pm
- Forum: PDP-11 Assembly Programming
- Topic: PDP-11
- Replies: 24
- Views: 27352
Re: PDP-11
Here is link to the simple example with all the tools need to build ROM cartridge image. Simply run a batch file and you'll get cartridge image. It uses RT-11 emulator to run native MACRO-11 assembler and linker to build a Standard Save Image File (.SAV) which can be executed under the RT-11 operati...
- Wed Oct 23, 2019 8:54 pm
- Forum: PDP-11 Assembly Programming
- Topic: PDP-11
- Replies: 24
- Views: 27352
Re: PDP-11
Oh, I misunderstood you. I'll have to set up everything on a Windows machine (my dev environment is Linux) and then describe what you need to build and run some simple program. I'll do that in the next couple of days.
- Tue Oct 22, 2019 7:41 pm
- Forum: PDP-11 Assembly Programming
- Topic: PDP-11
- Replies: 24
- Views: 27352
Re: PDP-11
Yeah it would be great)) I included a couple of pictures in the archive. screen.scr simple picture to demonstrate how screen represented in RAM rebels.scr is for redundancy And here is some commentaries: Byte order is Little-Endian. screen.scr colors are: 0b00 - black, 0b01 - red, 0b10 - green, 0b11...
- Mon Oct 21, 2019 11:41 am
- Forum: PDP-11 Assembly Programming
- Topic: PDP-11
- Replies: 24
- Views: 27352
Re: PDP-11
Once again, I'm trying to start converting ChibiAkumas to PDP-11 (UKNC))) Right now I'm trying to convert the T38-SC1.D01 loading screen to UKNC. When I try to view the result on the UKNC, garbage appears instead of the image. I suspect the T38-SC1.D01 file is not just a memory dump. Besides, for so...
- Sun Aug 11, 2019 1:11 am
- Forum: PDP-11 Assembly Programming
- Topic: PDP-11
- Replies: 24
- Views: 27352
Re: PDP-11
Thanks, Kith for creating the topic about PDP-11 compatible machines! What is great about PDP machines that the hardware and the assembler were designed with one thing in mind - easiness for the man to write programs in machine language. And it was the last platform designed with that thought in min...