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line, plot and circle in whole 256x192 displayhi! are there some way to draw lines, or whatever, in the whole 256x192 display, than just the above 256x176 part? (this is the msx1 version i made o…
...
PUSH HL ;store oldxy
LD H,D ;copy directions
POP HL ;coords
RET[/FONT ... -
MCODE problem...Hi Folks, Trying to write a simple machine code program to hatch the screen. So far I have the following but even this is not working - it does not…
... one of the Z80's block move commands LDIR. All the ...
ld de,#4001
push hl
ld (hl),#aa ... (hl),#55
ldir
pop hl
ld bc,#1600 ... -
AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…
... org LOCATE
ADJUST: push bc
pop hl ;HL=runtime location ... sbc hl,de
push hl
pop bc ;BC=runtime displacement ... four lines within the code block. The first DATA loop ... -
AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…
...
ld d,(hl)
push de
call STK_TO_BC ;First ... C, second to B
pop de
ld a,(de ... extracted as a 69 byte block starting at address 64000. As ... -
FN nesting error?While playing with FN functions that call assembly, I've found something weird. Check out this code: [code]10 DEF FN f(a,b)=a+b 20 PRINT FN f(FN f(…
... advances HL past '('
PUSH HL ; save start address in ... space:
[code] POP HL ; pop the start address in DEF ... from stack.
LDIR ; copy value into DEF FN statement ... -
playing sound samples from Boriel's zxbasic-compilerfirst of all, sorry if it sounds confusing if i'm posting this thread here instead instead of at Discussions:SinclarBasic it's because this is more …
... nz, Adr02' through Adr01. The block at address Adr01 needs to ... ,length
exx
push hl ; save hl' for basic ... jp po, next_byte
pop hl ; restore hl' for basic ... -
128k multicolour graphics...ok over the years I've been a fan of multicolour graphics on zx spectrum, an I clearly get that on a 48k the (8x1@2)multicolour limit stands at 18cha…
It's tricky. The POP/PUSH or LD/PUSH method works because you then ... PUSH the data to successive memory ... left-most or right-most block first, but you'd probably ... -
tiny routine to shift RAMTOP & stackCompressing some data areas above RAMTOP and wanting to make the released space available for BASIC arrays, I needed to move RAMTOP without using CLE…
... , L_7539 ; 32 244
PUSH HL ; 229
SBC HL ...
LDDR ; 237 184 ;copy old GOSUB stack
INC ... br /> POP BC ; 193
LD SP, HL ; 249
PUSH BC ... -
New SpecBAS available - v0.710Been a while, but I've just uploaded the latest build of SpecBAS. This one now supports tilemaps (with rotation and scaling) and added OVER mode (XO…
... ?[/quote]
I shall pop an archive of demo programs ... -
tiny routine to shift RAMTOP & stackCompressing some data areas above RAMTOP and wanting to make the released space available for BASIC arrays, I needed to move RAMTOP without using CLE…
... , NEXT_3 ; 32 244
PUSH HL ; 229
SBC HL ...
LDDR ; 237 184 ;copy old GOSUB stack
INC ... br /> POP BC ; 193
LD SP, HL ; 249
PUSH BC ... -
Procrustean PrintingHere's a short routine to manage printing of text with command tokens, to avoid messing up the screen when they are expanded. It just prints as many …
... side
LINE to COPY - space both sides
push af
call FETCHS
pop af
push hl
SSNEXT1:pop hl
... SSNEXT2:ld a,(de)
push af
and $7f ... -
Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... pointer into your data and POP to all four register pairs ... a row of data and PUSH it all to write to ... work was to draw or copy the scenery just behind the ... -
Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... pointer into your data and POP to all four register pairs ... a row of data and PUSH it all to write to ... work was to draw or copy the scenery just behind the ... -
Creating a new game - AssemblySo... finally I?m studying Assembly Z80... after 36 years. :) Well... it?s sooooooooooooo hard to make a game using Assembly? I bought a book (Spectr…
... .
(1) Using PUSH and POP to copy data around in memory ... -
Creating a new game - AssemblySo... finally I?m studying Assembly Z80... after 36 years. :) Well... it?s sooooooooooooo hard to make a game using Assembly? I bought a book (Spectr…
... .
(1) Using PUSH and POP to copy data around in memory ... -
Pixelwise scrolling sideways - how many ways to do it?Not that I need to, but I've been wondering if there's a good way to do this that I haven't considered. Scrolling [B]pixelwise [/B]vertically is "ea…
... bits in-situ and periodically copy to the main screen, but ... empty to block (3) one block to another block and (4) block back to ... then prepare a PUSH loop with the various PUSH statements (up to ... allows you one type of block per row (or two if ... -
Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…
... actualize the SP register for PUSH and for POPs, for the ... Pasmo macro to repeat the block 160 times, with the appropriate ... fastest possible method to copy your 160x160 pixel block.
If ... -
Loading the display with data from memoryTrying to load part of the screen(4k's worth) with data from memory location 53000, I've written this routine, but it doesnt work... [I]ld b,4000 ld…
*waits for someone to suggest an unrolled POP/PUSH list to do it 20% faster but take up more memory than the data it's trying to copy* :roll: :lol: -
Loading the display with data from memoryTrying to load part of the screen(4k's worth) with data from memory location 53000, I've written this routine, but it doesnt work... [I]ld b,4000 ld…
... someone to suggest an unrolled POP/PUSH list to do it 20 ... data it's trying to copy* :roll: :lol:[/QUOTE]
push bc ; 11
push de ; 11
push af ; 11 ... -
Loading the display with data from memoryTrying to load part of the screen(4k's worth) with data from memory location 53000, I've written this routine, but it doesnt work... [I]ld b,4000 ld…
[QUOTE=joefish;595817]*waits for someone to suggest an unrolled POP/PUSH list to do it 20% faster but take up more memory than the data it's trying to copy* :roll: :lol:[/QUOTE]
You shouldn't joke about such things... -
Loading the display with data from memoryTrying to load part of the screen(4k's worth) with data from memory location 53000, I've written this routine, but it doesnt work... [I]ld b,4000 ld…
[QUOTE=joefish;595817]*waits for someone to suggest an unrolled POP/PUSH list to do it 20% faster but take up more memory than the data it's trying to copy* :roll: :lol:[/QUOTE]
Chev doesn't post on WoS anymore :lol:
;-) -
LZ77 en/decodingI've written an LZ77 en/decoding routine as I couldn't find one around for the Spectrum. Initially I'm just doing it in BASIC to get the logic right.…
... time, reset the counter and copy the counter to other address ... ]PUSH HL
LD HL,$0000
LD ($5C78),HL
POP ... HL
HALT
CALL compress
PUSH HL
POP HL
RET[/CODE]
BUG in zxspin and SpecEmu - read Loading speed in WAV fileI'm created a new save, but it can run at 44.1 KHz, to test it, i make a new file from WAV 44.1 KHz to 88.2 KHz. Load this file in a emulator zx-spin…
... /> LD HL,$4000
otra_onda PUSH HL
LD B,$01 ... L
DJNZ mas_muestras
POP HL
INC H
Copy line2 more than 1 times ...Still looking for a LMT Computers SPD1 Spectrum Disc ControllerHi All, Looking for a LMT Computers SPD1 Spectrum Disc Controller or possible contacts for ex LMT Computers employees. I worked there writing the co…
... />
Commands like "* COPY A: B:" would copy disk A to disk ... could make a quick start copy of a game whilst the ... /> Oh those were the days... POP this , PUSH that, ADD HL, DEC ... the delays on the disk copy code... disk drive sounded like ...Multicolour demo using z88dk + BIFROST* (+source)This is just a demo to show how to show multicolour using z88dk, using the BIFROST* engine (more info [URL="http://www.worldofspectrum.org/forums/sho…
... [code]
BIFROST_setTile_callee:
pop hl ; hl = ret address
push/pops around the function ... itself and callee eliminates the pop code.
copy of the BIFROST functions.< ...PLOT and DRAW in machine codeHow do you go about it? If I posted a really simple BASIC instruction could someone do a machine code routine so I could learn from it? I wouldnt k…
... over the first routine - a block clear screen, and used the ... registers instead of (most) push and pop, and removed extraneous instructions (e ...Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
... service routine and uses POP and PUSH to copy the
contents ... /> [code]; Byte Order Backbuffer - Pop And Push Edition
; Copyright (c ... LDI is faster than POP/PUSH for everything except rainbow ... br /> Btw I've found POP/PUSH to be faster than LDI ...ISO-Copy - Individual Software revisitedHi folks In another thread about Supertape: [url]http://www.worldofspectrum.org/forums/showthread.php?t=36203[/url] ... we touched on ISO-Copy by th…
... br />
[QUOTE]The block I got was 6 bytes ... but the 10 byte block in Jose's TZX includes ... 5CDE IM 1
5CE0 PUSH IX
5CE2 LD BC ... included in the pure data block has been manually tailored, ... .com/u/70400652/ISO-Copy/ISOCOPY1%20raw%20data.jpg"] ...DK Tronics Compilation Tapes....MIA ??I have two tapes (no inlays) of compilaitons of DK Tronics games. One is from DK Tronics themselves, has a white label with black text, and contains…
... if Jumbly has a weird copy protection, or it's ... />
If you view block 5 as dump in tapir ... .
If you view block 6 as disassembly it appears ... to load 39620 bytes of block 7 (16402):
[code ... LD HL,53034
16401 PUSH HL
16402 LD ...
