While i was bored...

Discussion about ZX80 / ZX81 Software
Moggy
Posts: 3231
Joined: Wed Jun 18, 2008 2:00 pm

Re: While i was bored...

Post by Moggy »

I agree with Siggi

MORE BOREDOM PLEASE :lol:

Have I got this right, You are executing code from WITHIN THE DISPLAY FILE???? :? :shock:
I never cease to be amazed at some of the things I see in this forum :!:

True Genius Mate.

Regards Moggy
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Andy Rea
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Re: While i was bored...

Post by Andy Rea »

Kind of, excuting code from within the D_FILE,

there are 2 CALL nnnn instructions 1 in the first 3 bytes of the D_file, that jumps to my code so i can manipulate what actually gets displayed and when... the other call is after the scroller on row/line 10 that switches the D_FILE pointer back to my first D_FILE for the blob things...

then there are LD A,(HL) and RET Z instructions either side of the smooth sideways moving ZX81 at the top, these instructions are used to ab-normally shift (by 2 pixels per extra cycle) where the ZX81 is displayed.

thats about it really.

the CALL nnnn, JP nnnn trick is used by a few other programs.

Andy
what's that Smell.... smells like fresh flux and solder fumes...
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Andy Rea
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Re: While i was bored...

Post by Andy Rea »

No scroller, no hello's just lots of balls !

smooth-ish movement quarter character graphics...
MOREBALL.P
:-)
(1.55 KiB) Downloaded 184 times
regards Andy
what's that Smell.... smells like fresh flux and solder fumes...
Moggy
Posts: 3231
Joined: Wed Jun 18, 2008 2:00 pm

Re: While i was bored...

Post by Moggy »

Andy Rea wrote:No scroller, no hello's just lots of balls !

smooth-ish movement quarter character graphics...
MOREBALL.P
regards Andy

Andy You mad sod!!!! :lol: :lol: :lol:

This works great on a vanilla Zeddy + ZXpand, not managed with the other one though.

Great stuff mate.

Regards

Moggy
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