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SjASMPlus cross compiler of Z80 assembly languageHi! I want to present you cross-compiler of Z80 assembly language: [B]SjASMPlus[/B]. [SIZE="4"]Features:[/SIZE] [LIST] [*]Z80/R800 documented and un…
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[*]Code inlining through colon (LD A,C:INC A:PUSH ... AF:IFDEF FX:LD A,D:ENDIF…)
[*]Structures ...
[*]Fake instructions as LD HL,DE (LD H,D:LD L,E)
[*]Source ... -
How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…
Generally LD x,y and LD (x),y can't be ... /> That is to say LD HL,DE and LD (HL),DE are both invalid.
Z80 QuestionCan the instruction EX DE,HL be prefixed with DD to give EX DE,IX? Derek
... assembler assemles, for example LD HL,DE into LD H,D:LD L,E
Which assembler do you recommend to a (complete) newbie?OK, I am re-dusting my assembler books and want to re-dig into the Wonderful World of Assembly. Just wondering which assembler to go with. I reme…
... opcodes such as "LD HL,DE" (which actually assembles as LD H,D followed ... by LD L,E). I ...Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... .
ld hl, de ; HL = DE
inc de ; DE = HL + 1
ldi ; (DE) = (HL), DE ++, HL ++, BC --
ldi ; (DE) = (HL), DE ++, HL ++, BC ...Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... .
ld hl, de ; HL = DE
inc de ; DE = HL + 1
ldi ; (DE) = (HL), DE ++, HL ++, BC --
ldi ; (DE) = (HL), DE ++, HL ++, BC ...Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
1st thing to mention is LD HL,DE is not an opcode.
You need to use either
LD H,D
LD L,E
or
PUSH DE
POP HLMove objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... .
ld hl, de ; HL = DE
inc de ; DE = HL + 1
ldi ; (DE) = (HL), DE ++, HL ++, BC --
ldi ; (DE) = (HL), DE ++, HL ++, BC ...Fantasy Z80 instructions?This follows on from something catmeows said in another thread, and that I've been meaning to ask for a while. This may sound daft to people with mo…
... ]Oh, and also SUB HL,DE and SUB HL,BC. Why were they ... .
The fake instruction LD HL,DE for example, is internally converted ... the sequence:
LD H,D
LD L,E
which ... space and time a supposed LD HL,DE instruction would use (taking into ...Fantasy Z80 instructions?This follows on from something catmeows said in another thread, and that I've been meaning to ask for a while. This may sound daft to people with mo…
... typed in LD (DE),C or LD (BC),32 or ADD DE,BC and ... code to use HL instead. Would love a simple LD (HL),(DE) for byte ... used, but it messes with HL and DE BC...
Anyway ...Fantasy Z80 instructions?This follows on from something catmeows said in another thread, and that I've been meaning to ask for a while. This may sound daft to people with mo…
... typed in LD (DE),C or LD (BC),32 or ADD DE,BC and ... code to use HL instead. Would love a simple LD (HL),(DE) for byte ... used, but it messes with HL and DE BC...
Anyway ... , write a routine to do LD (HL),(DE).
I'd rather ...Fantasy Z80 instructions?This follows on from something catmeows said in another thread, and that I've been meaning to ask for a while. This may sound daft to people with mo…
yup, simple as LD A,(HL) LD (DE),A but LD (HL),(DE) would've been a very ... A or the altering of HL,DE or BC
After ...Gyroscope - reverse engineering the 3 title theme tunesHello, Does anyone know if anyone has done any disassembly work on Gyroscope? I'm particularly looking to get the three title tracks back into a …
... call:
[code]
C4EE LD HL, C4D6h
C4F1 CALL C4DBb ... , effectively does:
[code]
LD DE, (HL) ; (pseudo version of it's ... stack and a RET
LD (HL), DE
[/code]
So ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> push hl
ld hl, de
add hl, hl
add hl, hl
add hl, hl
ld de, FONTBASE ...
add hl, de ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> push hl
ld hl, de
add hl, hl
add hl, hl
add hl, hl
ld de, FONTBASE ...
add hl, de ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> push hl
ld hl, de
add hl, hl
add hl, hl
add hl, hl
ld de, FONTBASE ...
add hl, de ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> push hl
ld hl, de
add hl, hl
add hl, hl
add hl, hl
ld de, FONTBASE ...
add hl, de ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> push hl
ld hl, de
add hl, hl
add hl, hl
add hl, hl
ld de, FONTBASE ...
add hl, de ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... 's no LD HL, DE either! I could use EX DE, HL since DE was not ... /> ld (ix+nn),hl ; ld (ix+nn),l : ld (ix+nn+1),h
ld hl,de ; ld ... h,d : ld ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... . It's easy to forget LD HL, DE is not allowed if the ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... . It's easy to forget LD HL, DE is not allowed if the ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... .txt(52): warning: Fake instruction: ld hl, de
Pass 3 complete
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
Does pasmo allow pseudo instructions? I can't see anything in the manual about them, which suggests I used either sjasm or sjasm-plus last time I was writing z80 asm, since I found a few LD HL, DE in my codeHow to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> push hl
ld hl, de
add hl, hl
add hl, hl
add hl, hl
ld de, FONTBASE ...
add hl, de ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> push hl
ld hl, de
add hl, hl
add hl, hl
add hl, hl
ld de, FONTBASE ...
add hl, de ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> push hl
ld hl, de
add hl, hl
add hl, hl
add hl, hl
ld de, FONTBASE ...
add hl, de ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> push hl
ld hl, de
add hl, hl
add hl, hl
add hl, hl
ld de, FONTBASE ...
add hl, de ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... /> push hl
ld hl, de
add hl, hl
add hl, hl
add hl, hl
ld de, FONTBASE ...
add hl, de ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... br />
[code]
ld a, ; this is probably in ... ld hl, level_table_base_addr
add l
ld l, a
ld a, (hl)
inc l
ld h, (hl)
ld ... of 16 bit pointers into HL. You need to cope ...
