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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…
... HL,$E900 ;START OF VIRTUAL SCREEN
LD (STACK1),HL
PUSH IX
PUSH AF
PUSH DE
PUSH BC
PUSH IY ... C, VOLFU;going to new screen segment, if e.g h ... we are in the same screen segment
VOLFU EXX ... -
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…
The reason PUSH/POP is so preferable for ... at the edges of the screen. But that's only viable ... same things multiple times with PUSH.
With LDI, or ... -
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…
... push bc
push de
exx
push bc
push de
push ... push bc
push de
exx
push bc
push de
push ... copying to screen. thats where you get real benefit from push/pop ... -
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…
... copying to screen. thats where you get real benefit from push/pop ... -
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…
... copying to screen. thats where you get real benefit from push/pop ... ). So the main benefit from push/pop copy will be outside ... -
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…
... tiles and can use POP/PUSH, the former takes the lead ... the entire width of the screen would scroll in under a ... -
M/C mathsHow would I do the equivalent of LET A=B*7 in machine code?
If it's normal Spectrum screen calculations, you might be better ... (sum=sum*2)
rlca ; push the next bit from A ... -
Faster CLS...Hi Folks, Looking at the CLS command in the Spectrum ROM disassembly it seems rather complex. Does anyone know of a simpler/quicker routine that wi…
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The PUSH method works backwards through screen memory, so as ... the screen is being drawn ... frame where only half the screen is erased. Using LDIR on ... it works faster than the screen redraw so if you PAUSE ... -
Using the ROMs PRINT routineI really am starting from scratch again it seems, but how do you utilize the ROM routine to print characters, I think you point te BC register to an …
... include as pointer
push de ;save screen address
call ...
pop de ;get screen address
call p_char
;
p_char push de ;save screen address
ld b ... ld (de),a ;put on screen
inc hl ;next graphic ... -
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…
... tiles and can use POP/PUSH, the former takes the ... 7 lines of the screen being used by the ... lines below are done using PUSH since they're just ... the entire width of the screen would scroll in under ... parallax is also drawn using PUSH but only scrolled every ...
