Search found 645 matches

by at67
17 Apr 2023, 01:51
Forum: Hardware and software hacking
Topic: Moon Patrol [game]
Replies: 4
Views: 1018

Re: Moon Patrol [game]

Fantastic arcade conversion, well done!
by at67
10 Apr 2023, 11:16
Forum: Hardware and software hacking
Topic: gtBASIC
Replies: 435
Views: 101570

Re: gtBASIC

Not sure if you want to wait for the next release, coming soon (TM), it has SPRITE SHOW and SPRITE HIDE commands.
by at67
10 Apr 2023, 06:42
Forum: Hardware and software hacking
Topic: gtBASIC
Replies: 435
Views: 101570

Re: gtBASIC

Every resource in gtBASIC is statically allocated, (almost), this means it's allocated just once as part of the compile and then load process, there is no cleanup you should be doing when resetting your app, apart from resetting your app's state and variables.
by at67
10 Apr 2023, 03:55
Forum: Hardware and software hacking
Topic: gtBASIC
Replies: 435
Views: 101570

Re: gtBASIC

Looks and plays great, awesome job..now get the logs rolling!
by at67
04 Apr 2023, 17:27
Forum: Hardware and software hacking
Topic: LoGo 64k [game]
Replies: 6
Views: 760

Re: LoGo 64k [game]

That looks to me like sync issues, meaning you've broken the firmware's video timing. I'd check all your SYS calls, make sure all the args/regs are correct and that you are calling the correct cycle count. e.g. in your assembler do you do something like this for the cycle operand to the SYS opcode? ...
by at67
03 Apr 2023, 22:58
Forum: Hardware and software hacking
Topic: LoGo 64k [game]
Replies: 6
Views: 760

Re: LoGo 64k [game]

Phibrizzo wrote: 03 Apr 2023, 13:27 But a have noise on the screen. Source is like that:
What kind of noise do you have?

1) Screen flicker?
2) Sync timing issues?
3) Random pixels?

Can you provide a screenshot or video?
by at67
02 Apr 2023, 03:48
Forum: Hardware and software hacking
Topic: gtBASIC
Replies: 435
Views: 101570

Re: gtBASIC

In gtBASIC you can do full screen double buffering pretty easily, but there are some major caveats, the main one being you lose another 19k or so of RAM; but probably more importantly you chop up 32k of contiguous RAM, (in the extra 32k page page), into the same segmented fashion as the first 32k pa...
by at67
27 Mar 2023, 11:42
Forum: Hardware and software hacking
Topic: gtBASIC
Replies: 435
Views: 101570

Re: gtBASIC

Looks pretty awesome. write a custom line routine for the vines, (very simple one that saves background pixels and then restores them).

I was going to do Pitfall as my next project, but I'll move onto River Raid.
by at67
18 Mar 2023, 12:37
Forum: Hardware and software hacking
Topic: gtBASIC
Replies: 435
Views: 101570

Re: gtBASIC

There's a good explanation of the difference between the two registers here, by Marcel: https://forum.gigatron.io/viewtopic.php?t=138 1) serialRaw is the raw bits read from the shift register every 60Hz. 2) buttonState is an edge triggered representation of serialRaw that the native ROM creates for ...