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New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... stupid PUSH parameters on the stack nackers. I don't believe ... long as I have a screen pointer and basic I/O ... -
New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... corrupting the screen or game memory. Only 17 BYTES of stack space ... -
New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... corrupting the screen or game memory. Only 17 BYTES of stack space ... -
New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... corrupting the screen or game memory. Only 17 BYTES of stack space ... -
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... br />
call cls ; Clear screen
call draw_sprites ; Print ... ; Write 0 to screen
inc hl ; Next screen location
< ... for SP change
ld (stack+1),sp ; Store SP using ... back to line
stack ld sp,0 ; Reset SP ... -
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... br />
call cls ; Clear screen
call draw_sprites ; Print ... ; Write 0 to screen
inc hl ; Next screen location
< ... for SP change
ld (stack+1),sp ; Store SP using ... back to line
stack ld sp,0 ; Reset SP ... -
48k rubber key screen corruption[IMG][URL=http://img195.imageshack.us/i/img7398g.jpg/][IMG]http://img195.imageshack.us/img195/5563/img7398g.th.jpg[/IMG][/URL] Uploaded with [URL=htt…
... patterns in screen often reflect the building of an MC stack thoughout ... -
Loading a screen in to memory...Hi Folks, I want to load a SCREEN$ in to memory and save it out to RAM disk without it being displayed on the screen. I am worried about over writi…
... by either BASIC or the stack.[/QUOTE]
Hi Paul ... want to safely load a screen in to non-video RAM ... -
Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …
... just add a "redefine keys" screen. If this was a serious ... have the ISR table, the stack and some large area which ... that if I moved the stack above something like 53428, then ... -
Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …
... the ISR table, the stack and some large area which ... that if I moved the stack above something like 53428, ... bytes per character square on screen. That's 7680 bytes ... reduce the size of screen SP1 draws to by ... smaller than the full screen but you also have ... -
Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …
... would reduce the full screen update array requirements from ... z80 does not have a stack-relative addressing mode. Making ... />
You will minimize stack space required by making locals ... crash almost immediately should a stack overflow occur.
... -
Supertest 128 - Loader QuestionI wonder if someone could explain (in simple terms please) :) , the purpose of the switch code. I see what is doing (going to 48k mode via spectrum)…
... in order, the title screen, then memory banks 0, ... code goes at 5:6000h, stack at 5:68FEh
; 2. Load screen at 0x4000: 0x1B00 bytes
screen & attributes
ld ... /> ;
; 2. Load screen (6912) at 0:4000
Screen$ command, ROM routineHi All, Does anyone know which ROM routine to call for the Screen$ command (and/or the ATTR command)? Any comments on how well it works or the spee…
... routine to call for the Screen$ command (and/or the ATTR ... ]
SCREEN$ will store the value on the stack and you ...Screen$ command, ROM routineHi All, Does anyone know which ROM routine to call for the Screen$ command (and/or the ATTR command)? Any comments on how well it works or the spee…
...
Then get value from stack with CALL #2dd5
A holds SCREEN$(1,1)yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... /> init: ld sp,0xffff ; set stack pointer
call zerobss ; zero ... bss
call cls ; clear screen
im 1 ; im ...Recursive 4-way floodfillHi guys) Shortly, I wanna find out whether there's a way to some object. Perhaps some of you have already encountered such an issue which is relativ…
... -1
However you stack per pixel, not per character ... routine goes wrong on ANY screen that has no bounderies. An ... empty screen i.e. will go OUT ...Recursive 4-way floodfillHi guys) Shortly, I wanna find out whether there's a way to some object. Perhaps some of you have already encountered such an issue which is relativ…
... filled, which if a full screen fill is happening is proportional ... bytes of stack space it can fill an entire screen.
Other features: it fills entire screen bytes at a time rather ... pixels. It does not recompute screen addresses for each point or ...Gigascreen - programming guideDoes anyone know of a programming guide for the 128K gigascreen screen mode, specifically a persistence colours table, some code (pref. C level or BA…
... AF ;Store numbers on the stack...
PUSH DE ;...as ... ;...
POP AF ;...from the stack.
INC DE ... OUT (C),A ;View screen 0, with screen 1 in high memory ... OUT (C),A ;View screen 1, with screen 1 in high memory ...Sprites masterclassHi All, You guys are probably tired of explaining sprites but I'd like to clarify a few things if possible. I've sorted the vertical aspect of scro…
... push af ;remember value on stack
call nc,mpd ;being ... /> here2 ld hl,(seed) ;screen address table pointer
dec ... ,0
seed defw screen ;screen address table pointer, table below ... or before, sprite misses third screen segment later
defw ...Need in beta-taster`s helpHello to all. I have developed hard-soft emulator of ZX Spectrum 48, but there are problems in work. My topics is: [url]http://www.worldofspectrum.or…
... ) in calculator stack is less then 1. In the screen i see ...yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... any font anywhere on the screen (x...0-255, y..0 ... a second to draw entire screen. Then again you can have ... memory, set up the process stack pointer to point to allocated ... stack and do some other things ...Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... POP/PUSH, you set the stack to the data POP a ... value off the stack, change the stack pointer to the screen and PUSH ... is to point the stack pointer at the screen then do a ... benefit of drawing to the screen from the bottom up and ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... no-longer uses the stack or a loop. The ... , l ; without using the stack
add hl, hl ... ; WRITE A CHARACTER TO THE SCREEN
; There are four ... inc d ; point to next screen location
inc hl ; ... inc d ; point to next screen location
inc hl ; ...Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... . You can use them as stack pointers whilst you use all ... .
PUSHing to the screen in reverse order does create ... line-by-line down the screen, even if the actual row ... haven't got a hidden screen to work on.Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... , pushed the value off the stack and decreased the SP. I ... drawn to the screen with HL pointing to screen, and LD (HL ...Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... /> With the 128's second screen, it's easy to do ... the optimistic view, since the stack forces you to go right ...Welcome back Spectaculator!Hmm, I have to evaluate this again. It's the first emu I've tried that actually seems to boots the PlusD. Is there any way of speeding up the disc …
... find simply by examining the stack in the debugger after a ... a snapshot with the loading screen still intact.
The ...Minor Update to Gasman's Midi2BEEPDon't know whether this is worthy an announcement, but for those of you who enjoyed Gasman's midi2BEEP utility, a new variant has been made called mi…
... the interferrrence like lines across screen, so know that some fast ... byte is POPed off the stack and sent to the 128 ...Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... middle 1/3rd of the screen into s$.
However ... which will call Slicing from Stack Variable.
However, if ... in the DEFADD area then Stack Variable is not called, because ... flagged as "not required" by Stack Function Argument, so Slicing is ...
