Search found 123 matches

by at67
Today, 11:11
Forum: Escape Meta Alt Control Shift
Topic: 1000+ and Gigatron future
Replies: 3
Views: 91

Re: 1000+ and Gigatron future

Is it just on my end or did a message get overwritten with Walter's future Tardis pic?

And yes this is the place for Tardis updates :)
by at67
Today, 10:49
Forum: Hardware and software hacking
Topic: Interrupts:
Replies: 11
Views: 5010

Re: Interrupts:

[Partly replying just to keep conversations going on this forum] I'd been wondering if a good use for the vBlank interrupt would be to implement a keyboard buffer for programs like BASIC. Perhaps using a small ring buffer, of say 32 characters, or less. I think it would be easy for slow programs to...
by at67
Yesterday, 23:05
Forum: Hardware and software hacking
Topic: Interrupts:
Replies: 11
Views: 5010

Re: Interrupts:

I am cursing myself for not responding to this when I could have, (rest in peace Marcel). Consider it done and tested: vertical blank interrupts now work fine in dev.rom. Vertical Blank Interrupts on the Gigatron work better than I could ever have possibly imagined, I conjured up so many scenarios w...
by at67
26 May 2020, 21:50
Forum: Escape Meta Alt Control Shift
Topic: In memoriam Marcel
Replies: 8
Views: 348

Re: In memoriam Marcel

Hi Walter, I knew Marcel was sick, but obviously I had no idea as to the extent of his malady :( What the two of you have accomplished is a wonderful contribution to the retro scene and I dare say has had a huge impact on it's explosive growth over the last few years. Ever since I first caught wind ...
by at67
24 May 2020, 15:16
Forum: Hardware and software hacking
Topic: gtBASIC
Replies: 18
Views: 3621

Re: gtBASIC

Ver 0.9.8B, (Beta): - Added better handling of critical runtime routines to the BASIC compiler, so that they are loaded only when needed, (saves approx. 100 bytes per .GT1 file). - Added string arrays, to the BASIC compiler, (1 dim only, 2 if you count the string itself), but the syntax is 1 dim on...
by at67
22 May 2020, 11:33
Forum: Hardware and software hacking
Topic: gtBASIC
Replies: 18
Views: 3621

Re: gtBASIC

Ver 0.9.7B, (Beta): - Added a time module with the following commands, 'TIME$', 'GET("TIME_H")', 'GET("TIME_M")', 'GET("TIME_S")', 'GET("TIMER"), 'SET("TIME_MODE")', 'SET("TIME_EPOCH")', 'SET("TIME_H")', 'SET("TIME_M")', 'SET("TIME_S")', 'SET("TIMER")' and more. - Added the INIT command to the BASI...
by at67
18 May 2020, 15:07
Forum: Hardware and software hacking
Topic: gtBASIC
Replies: 18
Views: 3621

Re: gtBASIC

Ver 0.9.6B, (Beta): - Added a bunch of transcendental functions to the vASM assembler and BASIC compiler expression handlers. - Added multi dimensional arrays for 16it integers, (up to 3 dimensions). - Added the ASM and ENDASM keywords to the BASIC compiler, you can now easily embed vASM code in BA...
by at67
12 May 2020, 03:49
Forum: Hardware and software hacking
Topic: gtBASIC
Replies: 18
Views: 3621

Re: gtBASIC

a fix is now in dev.rom. It works in emulation but it isn't tested on real hardware yet. I just tested 'dev.rom' on real hardware, it works perfectly now, cheers. Ver 0.9.4B, (Beta): - added ' romType' checking code to the initialisation phase of the gtBASIC runtime and a pixel blinker error handle...
by at67
10 May 2020, 17:06
Forum: Hardware and software hacking
Topic: gtBASIC
Replies: 18
Views: 3621

Re: gtBASIC

After some more experiments, (I wrote the simplest gtBASIC and vCPU programs that I could, they both just print the value contained at address 0x0021). Printing the contents of address 0x0021 for the following ROMs, gives: ROMv4: 0x3B ROMv5a: 0x40 DEV: 0xF8 Something is resetting the lowest order 3 ...