Search found 16 matches

by madaxe
Thu Apr 10, 2025 9:17 am
Forum: General 68000 Assembly
Topic: What is faster ? Clear or Load ?
Replies: 3
Views: 25558

Re: What is faster ? Clear or Load ?

Sure, beside of those two that you had indicated I also found these:

https://mrjester.hapisan.com/04_MC68/CycleTimes.htm (Mega Drive oriented)
https://nguillaumin.github.io/perihelio ... -times.txt (Atari ST oriented)
by madaxe
Sat Mar 29, 2025 9:42 am
Forum: General 68000 Assembly
Topic: What is faster ? Clear or Load ?
Replies: 3
Views: 25558

Re: What is faster ? Clear or Load ?

Well, after some digging I found out that:

move.l #$00000000,d0 takes 4 cycles
clr.l d0 takes 6 cycles
by madaxe
Wed Mar 26, 2025 2:43 pm
Forum: General 68000 Assembly
Topic: What is faster ? Clear or Load ?
Replies: 3
Views: 25558

What is faster ? Clear or Load ?

Hi there;

What is faster?

clr.l d0 or move.l #$00000000,d0
by madaxe
Sun Oct 23, 2022 9:55 am
Forum: Show and Tell
Topic: A small invader "game" to Atari ST.
Replies: 1
Views: 31368

Re: A small invader "game" to Atari ST.

Hi there;

Despite of working well on Steem and on Real Hardware, the last version of "Invader" has an erratic behavior on Hatari and Steem SSE due to some IKDB emulation issues. So I made a little modification in order to run in all emulators.
by madaxe
Mon May 16, 2022 5:12 pm
Forum: Show and Tell
Topic: A small invader "game" to Atari ST.
Replies: 1
Views: 31368

A small invader "game" to Atari ST.

Hi there;

I used to code in C using Pure C so I decided to learn 68K assembly.
I made this prototype of a space invader game in 68K asm. It works in following way:

- A small invader appears randomly on the screen.
- The invader moves to the left and to the right.
- You can move your ship to the ...
by madaxe
Sat May 14, 2022 5:16 pm
Forum: Atari ST Assembly Programming
Topic: Very good source of Atari 68K asm information
Replies: 0
Views: 34409

Very good source of Atari 68K asm information

To complement the good work of akuyou I find these tutorials from perihelion of poSTmortem very useful:
https://nguillaumin.github.io/perihelio ... tutorials/
by madaxe
Tue Jun 29, 2021 1:46 pm
Forum: 8086 Assembly Programming
Topic: Conditions Calls
Replies: 2
Views: 10664

Re: Conditions Calls


There isn't in 8086, If you want to do a 'conditional call', you should jump over the call statement when the condition is not true

For example if you want to call if Zero:
JNZ NoCall
CALL CallIfZero
NoCall:


Thank you, Keith! I thought that was something like that :-P
Just ordered your ...
by madaxe
Fri Jun 25, 2021 5:18 pm
Forum: 8086 Assembly Programming
Topic: Conditions Calls
Replies: 2
Views: 10664

Conditions Calls

Hi there;

In 8086 assembly is there something like Conditions Calls like the good old Z80? Something like call nc, call nz, etc?
by madaxe
Sat Jun 13, 2020 8:45 am
Forum: 8086 Assembly Programming
Topic: What is faster: stack or registers?
Replies: 15
Views: 33372

Re: What is faster: stack or registers?

Well compatibility settings don't work. Doesn't appear to matter what options I try. Here's the log:

STATUS INFO : @ 12:15:34 MSG : Starting Application IN : Initialization
STATUS INFO : @ 12:15:36 MSG : Terminating Application IN : Finalization

Mmmmm, it seems that compatibility mode isn't so ...
by madaxe
Fri Jun 12, 2020 9:09 am
Forum: 8086 Assembly Programming
Topic: What is faster: stack or registers?
Replies: 15
Views: 33372

Re: What is faster: stack or registers?

I have tried compatability settings. Should it work with XP?

Yes, I it should run with no problems on Windows 95 / 2000 / XP / Vista / Windows 7.
If you coulnd't run it, check this walkthroughs made by the gammers:

Atari - Programmed in C and Assembly :
https://www.youtube.com/watch?v ...

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