-
Delay routineAs some people are aware, I have recently starting writing a [url=http://fuse-emulator.svn.sourceforge.net/viewvc/fuse-emulator/trunk/fusetest/]autom…
... base-29
delay xor a ; 4
or h ... +256-58
delay xor a ; 4
or h ... -
How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
[QUOTE=Rickard;193535]
[CODE]xor a ; black border[/CODE]
I have always wondered if this instruction actually can be used for anything else than setting A to 0? :smile:[/QUOTE]
Reset Carry Flag and set Zero flag!How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
[QUOTE=Dr BEEP;193542]Reset Carry Flag and set Zero flag![/QUOTE]
But it can never do anything useful with the XOR instruction itself?
Could the opcode have been "Clear A and Carry, set Zero"? :-)How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... do anything useful with the XOR instruction itself?
Could ...How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... br /> 168 xor b
169 xor c
170 xor d
171 xor e
172 xor h
174 xor l
175 xor (hl)
176 xor a
My favourite Radio Station ,,,,|,,,|,,,|,,,([]),|,,,,|,,,|,,,|When me and the wife visit Atlanta our favourite radio station is Dave FM. Funny name I know. It can now be found online, and listened to free. Kin…
... with weezer. Or a random Nirvana track (usually Come as you ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... flavours from LOAD, OR and XOR to rotates left and right ...Game ideaThinking of a game that could enter the Minigame compo I came to the following idea for a game, although it might not fit 1K or 4K: A mazed snake ga…
... routine.
[code]
xor a
ld hl,23560 ...Favourite Gaming moment of the last 25 yearsin a continuation of the 25 years thread what's you favourite moment it could be anything a sprite, a soundbite a loading screen anything mime is w…
... years) are:-
Completing XOR, Completing Head over Heels. Both ... completing the excellent Windows Remakes. XOR is brilliant but diabolically difficult ... . It's very similar to XOR, and equally difficult.
Completing on the first attemptWhich - if any - games can you recall completing on your first go? I remember two - Bruce Lee (of course) and Timegate.
[QUOTE=WhenIWasCruel;206194]Yesterday night I tried Street Gang and...
I didn't make it.[/QUOTE]
Did you enjoy the attempt?
How close did you get to 1st go 'nirvana'?Completing on the first attemptWhich - if any - games can you recall completing on your first go? I remember two - Bruce Lee (of course) and Timegate.
... you get to 1st go 'nirvana'?[/QUOTE]
I started ...Splitting Images tzx maybe not perfectI've been hacking this game and its loader. Also the save routine is intact in this game. It saves a block with a pilot length of 801 pulses. Test…
...
ld sp, $abf4
xor a
out ($fe), a ... a, ($fe)
rra
xor c
and $20
out ($fe), a
xor $0f
ld b, $a4 ... /> l_a30d: ld a, h
xor l
l_a30f: ld h ... l_a319
dec b
xor a
inc a
Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…
... also check out the game "XOR". (speccy version or the PC ...48K sound effectsAnybody knows where could I find some small M/C routines to play tiny beeper sounds I could use in the 48K version of a game? I don't want the 48K pl…
... ,(CurrLevelPaperColour) ;flip the speaker
xor %00010000
out ($fe),a ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... player colour
// bit 6 = xor plot flash
// bit 7 ... );
}
// bit 6 = xor flash in plot
// bit 6 = xor plot flash
// bit 7 ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
Easy Compare On 2 Byte Register?e.g. HL, BC, DE Has anybody got a really easy way of doing this without comparing each byte seperately? Any maths has no effect on the flags as far a…
XOR A ; Clear Carry flag and zero A
SBC HL,DE ; Compare HL and DE
OR H
OR L
JP Z,match ; Zero flag will be set if HL=DEEasy Compare On 2 Byte Register?e.g. HL, BC, DE Has anybody got a really easy way of doing this without comparing each byte seperately? Any maths has no effect on the flags as far a…
[QUOTE=AndyC;213114]XOR A ; Clear Carry flag and ...Bubble Bobble EditI thought I might have a go at editing Bubble Bobble myself after reading this... [url]http://www.worldofspectrum.org/forums/showthread.php?t=15452[…
... nz,#82df ;not yet
xor a ;yes we are level ...Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …
...
depack: ldi
xor a
ld (lwm),a ... /> jr nc,apbranch3
xor a ;LWM = 0
ld ...
jr nz,apbranch4
xor a ;write a 0
apbranch1: ldi
xor a
ld (lwm),a ...Compressors are available for Speccys ?Hi folks, although I was an wasn't strictly a speccy coder in the glory days (amstrad & amiga for the most part), I have secides to arse about with …
... ),a
apbranch1: ldi
xor a
ld (lwm),a ... /> jr nc,apbranch3
xor a ;LWM = 0
ld ...
