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What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…
... ld iy, hl (does push hl, pop iy), is that a feature ... -
Double Dragon 128k - The graphicsAs you are all probably aware, I tried gathering a team of people together a few years back to make a totally re-programmed version of Double Dragon …
Double Dragon 128k - The graphicsAs you are all probably aware, I tried gathering a team of people together a few years back to make a totally re-programmed version of Double Dragon …
... ... As for "do you use PUSH BC/POP BC corectly?"... er... probably ...Character scrollingOk, first I'd like to say that I'm not looking for a complete routine (but that might help) because I am hoping to write it myself and learn a bit mo…
... data value
.nextroll
push bc
ld b, d ... to next data address
pop bc ; restore count/data
Help fix this keyboard read program?This code runs in an interrupt routine with DI. What would be the simplest way of making it so it doesn't auto repeat a keypress? [code]keys: ld a…
... jump here.
int_routine
push af ; Save all the main ... /> push bc
push de
push hl
call keys ;
pop hl ... register values
pop de
pop bc
pop af
ei ...Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…
... /> isr: push af
push bc
push de
push hl ; save ... br /> ENDR
pop hl
inc l
pop hl
pop de
pop bc
pop af ; restore ... />
pop hl
pop de
pop bc
pop af ; restore ...Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…
Yeah I know, I try and use them as little as possible, but as a C programmer they scream "struct" to me ;)
Index registers better than push and pop of normal registers though?
EDIT: It's my first ever machine code program ;)Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…
... /> Index registers better than push and pop of normal registers though?
push hl
ld de ...
call JumpHL
pop de
ld hl,T_SPData ...Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…
... /> Index registers better than push and pop of normal registers though?
OR in a IFHi guys, I have a string that is defined by the user. I want to have an IF that does something like IF string<> a OR b OR c THEN goto 10 Hope that m…
... returning to BASIC (I push and pop it but you can just ...OR in a IFHi guys, I have a string that is defined by the user. I want to have an IF that does something like IF string<> a OR b OR c THEN goto 10 Hope that m…
... returning to BASIC (I push and pop it but you can just ...Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…
Joffa, I suggest you HALT this behaviour towards Paradigm Shifter. Seriously, don't PUSH him 'cos he's gonna POP you and you're gonna DI.Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…
... , don't PUSH him 'cos he's gonna POP you and you ...Z80 compressorIs there one available? Is it any good? Peeps have been suggesting we should look into this, so here's a new thread! I'd do the compressor on the …
... for symbol
push hl
exx
pop hl ; hl = decoder ... b,a
.writeloop
pop af
ld a,c ... /> cp h
.foundchild
push af ; save: nz = right child ...Easy way to print text in machine code?Please? It sounds so simple, but I've never done it. At the moment I'm grabbing the start address for each letter then printing them out one at a t…
... text
text2
push hl
ld h, 0 ... it into attr memory
pop hl ;restore pointer for next ...tricks to simplify codingWhen i started with programming in assembler i had very simple approach to do things. Just shifting bytes around, doing simple tests and so... Later …
... have 0x7f types!
push hl
ld de ... />
call JumpHL
pop de
ld hl,T_SPData ...tricks to simplify codingWhen i started with programming in assembler i had very simple approach to do things. Just shifting bytes around, doing simple tests and so... Later …
... and whatnot, often doing a PUSH HL / POP IX combo, to give ...Need help with small asm piece of codeI could use some help. I have a number in A register. It can be 1,2,4 or 8 (always only one bit is set) I need to make number transformation: 1 ->…
... this?
[CODE]
push bc ; we need bc for ... now holds transformed value
pop bc ; restore bc
[/CODE ...New member here. And a spider! :)Hello everyone. My name is Sekrets. I'm quite a lonely individual, searching for a digital home where I might find fellow speccy enthusiasts to adopt…
... you use
push hl
pop de
to ... /> 8
9 pop hl
10 pop de
11 ex ...Midi2ayhello, Does anyone know how to use MIDI2AY ? FABIEN
... here
push af
push bc
push hl
pop hl
pop bc
pop af
jp ...Midi Out from machine codeI need to send midi-signals by machine code, while Basic is too slow for my current project. I already read I can use hookcode #11E, but I have some …
... New"]ORG 40000
PUSH AF
PUSH BC
LD A ... rom (rom 1)
POP BC
POP AF
RET[/FONT ...Midi Out from machine codeI need to send midi-signals by machine code, while Basic is too slow for my current project. I already read I can use hookcode #11E, but I have some …
... /> [FONT="Courier New"]PUSH AF
PUSH BC
PUSH HL
POP HL
POP BC
POP AF
RET ...Static vs stacked local variables in z88dkHello everyone. I'm doing a program for Spectrum 48KB with z88dk v1.8 (XX Mar 2008), and I eventually discovered that if your local variables in fun…
... efficiently accessed via push/pops.
pop hl
push hl ; hl ...
pop bc
pop hl
push hl
push bc ; hl ... / coder may not have to push values back.
Combinations ...Static vs stacked local variables in z88dkHello everyone. I'm doing a program for Spectrum 48KB with z88dk v1.8 (XX Mar 2008), and I eventually discovered that if your local variables in fun…
optimalized register allocation could help a bit
[code]
exx
push de ;commom local var
exx
pop hl ;goes to 'accumulator' for next operation
[/code]
is better than access through index registers.Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
[code]
; PRINT AT Y,X full screen
; Y = B-reg, X = C-reg
; 0Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
Now with saving temporary colours
[code]
; PRINT AT Y,X full screen
; Y = B-reg, X = C-reg
; 0Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... current position in Message
push bc ;save off current Character ...
call p_print ;
pop bc ;restore the current Character ... column\X value
pop hl ;restore position in the ...
call p_print
pop bc
dec c
Some TR-DOS technical questionsHi forum, I sincerelly hope this was the right section of yours to ask this kind of stuff in. (else return facepalm;) Anyway, here's a couple of que…
... of retries
ERR PUSH HL ;
PUSH BC ;
LD ... prec. trd. routine)
POP BC ;
ld a, ... br /> and #7f ;
pop hl ;
JR NZ,ERRCHK ... ),a: ret
TODOS PUSH IX ;
DOS JP ...The Spec-chum 100 Push Ups challengeHi Spec Chums! I found this website last night, which says you can train to do 100 push ups in 6 weeks: [url]http://hundredpushups.com/[/url] It h…
... give it a pop. managed a measly 10 push-ups just now ...
