Gigatron Hackers

Hello

Long time ago i did it something like this:



I used plans from McFP archive
It working very well on first plugin. Tested with two differents PS/2 keyboards.

Are You sure your circuits PCB is correct? Or use correct batch for ATtiny?

lb3361 wrote: ↑21 Dec 2024, 22:14 Then I believe you can go even faster.

Yes, You're right. I did it.
Now is very faaast
Backward copy is now only few times exetuting.

Source:
http://www.changeit.ppa.pl/ftp/r_7x0.asm

There should be an opcode NCOPY in ROMvX0 that is slower than SYS_CopyMemory but might have smaller setup times. I wrote it. Alas I do not remember its peak performance. Looking at the code it seems to achieve 8 pixels per scanline, two thirds of the peak speed of SYS_CopyMemory. But when the chunk...

Hello

I apologize, i lied last time.
I have studied the ROMvX0's documentation and i did somethig faster.
I used two sys function: SYS_CopyMemory for forward copy areas and SYS_MemCopyByte for backward.
Now wroking good on the ScreenMode 2 too.

Hello

This is my last word in this mather.
Now is much faster than latest version. I used one SYS function to copy areas.

Hello

Your effect is very spectatular
I tested previous version for dev7 on real hardware but not working. Propably i have too old version of this rom.
I hat to use emulator.
Where can i find latest version of dev7 rom?

Second version woking very well on ROMv6.

Hello

I rewrote all code to vX0 asembler. Now is much faster but without rave

Source: http://changeit.ppa.pl/ftp/rotator_vx0.asm

Question: possible is generate a txt file with instruction and parameters, and how is coded? Please.
exp: ADDXX <WORD var1>, <BYTE var2> , imm8
On this moment i have problems guess how is now. I checked some instructions and Is little chaos.

at67 wrote: ↑23 Nov 2024, 16:20 It probably is out of date,

You are right. I updated all opcodes. And now is better But still have problem with some instructions.
exp. LSRV (opcode: $2F73) - Logical shift right word var.

Then i have question: on Github is latest version of ROMvX0 file?

I did few tests on randomly instructions. Some working correctly. But some not.

Exp. DEEK+ (opcode 0x60) working like DOKE+. Propably is wrong definied in instructions.txt file on Github.