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ANN: Spud v0.201New version of Spud released. Nothing major just a few bugfixes thanks to user feedback. At the soon to be usual link [COLOR=#4040c0][URL]http://…
... a Tape Error: Cannot Allocate Block message.
13 - Directdraw option ... - In debugger, tools -> Push and Pop value, do they do anything ... -
ANN: Spud v0.201New version of Spud released. Nothing major just a few bugfixes thanks to user feedback. At the soon to be usual link [COLOR=#4040c0][URL]http://…
... a Tape Error: Cannot Allocate Block message.
13 - Directdraw option ... - In debugger, tools -> Push and Pop value, do they do anything ... -
Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
... 's the outline for a fast full screen vertical scroll:
add ix, de
nextln: push af
ld a, (x_off ... ix
inc ix
pop af
dec a
Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
... 's the outline for a fast full screen vertical scroll:
POP HL: POP DE: LDIx32: POP HL: POP DE and so ... /> add ix, de
nextln: push af
ld a, (x_off ... ix
inc ix
pop af
dec a
Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... data in register pair and PUSH it into screen buffer) ... .
Typical PUSH-filler code, 16.5t per ... l
push de[/code]
In POP-reading case ... you can store second copy of whole source data in ... used not only to copy large linear blocks of ...RGB on speccy ?hi, just a question : are you aware of scene demo trying emulate rgb ? i was a bit ill last few days so laying in bad i come with a (stupid ?) idea.…
... copy bytes around, and even the fastest way of doing that (POP ... into every available register including the alternates, then PUSH them ...ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …
... break: LD A,(work3) ; Copy decay rate to decay count ... br /> LD A,(work5) ; Copy attack rate to attack count ... program.
subr: PUSH BC ; Start of subroutine. Save ... LD (work2),A
labl5: POP BC ; Restore BC
...BASin r14d - Final bugfix for the r14 seriesOk, there's not a great deal to "show" here, as most of the work has been going on "under the hood" so to speak. And there's been a [i]lot[/i] of wor…
... /> PUSH HL
LD BC, 32 ; Copy 1 line
LDIR
POP ... HL ; Restore HL
PUSH HL ... line in display file
POP DE ; Restore last HL into ...Help to run Abu Simbel in a +2A SpectrumI bought this game some weeks ago, but the version is the old one. When I loaded it in the emulator, I had to switch the keyboard issue to 48Kissue.…
... ld bc,keyscan_size
ldir ; copy 'keyscan_code' to highest possible memory ... ; preserve HL, BC
push hl
pop ix
ld de ...Thinking in Assembly (first efforts)The following is one small routine to educate myself on a few concepts (jumps, flow control, routines, CPI): [code]searchmem xor a …
... excellent shortcut for search and block instructions. Awesome! Many thanks.
push hl
pop bc ; retrieve address
New game from CEZ GS: I Need SpeedRun fast to download it! [url]http://computeremuzone.com/ficha.php?id=752&l=en[/url] This is the last Spectrum game from CEZ GS, and my first serio…
... it, the game is very fast.[/QUOTE]
Believe me ... a free game with a copy protection...[/QUOTE]
It ... not meant to be a copy protection, just a faster and ... the turbo load, with each block being loaded on its own ...Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... about clipping as I will copy the central 28x16 chars (See ... )
call drawblock ; draw the block
ei
ret ... /> inc h
;-------------------------------------
pop de
pop bc
ld ...Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... lot easier.
Then, copy each line of the screen ... buffer bigger, so you can copy a full screen out of ... sceen address table and use POP to read off the screen ... line. Just remember not to PUSH or POP anything, and to set ...Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... />
Instead of
[CODE]pop de ; get first two bytes ... code that draws one specific block type. That *might* get you ... use this to fast draw the most common couple of block types..)Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... .
Also, the POP screen address and 28 LDI ... easier.
Then, copy each line of the screen ... bigger, so you can copy a full screen out of ... address table and use POP to read off the ... . Just remember not to PUSH or POP anything, and to set ...Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …
... /> push af
push bc
push de
push hl
push ix
push ... /> nop
nop
; copy the colours
REPT 24 ... /> pop iy
pop ix
pop hl
pop de
pop bc
pop ...Tips on optimizing some newbie assembly routinesI'm starting to learn some assembly language. The best way to learn is to actually code something you are going to use, so I'm creating a very simple…
... think it will render fast enough to avoid tearing, ... ; loop for 256 cells
push bc
[... inner ... Next cell...
pop hl
pop bc
ld a ...DivIDE QuestionHi all, I've been trying to work out how the DivIDE works and after reading and re-reading the DivIDE programming model document by Zilog I think it…
... 102(#66) and read instrustion PUSH AF
2) at adress ... your NMI code.
3) push registers to stack + your NMI ... NMI to 48rom you must pop all registers + jump to "map ... />
- ZX font you can copy from 48rom to DivIDE ram ...ZX games for fixingExist any games/software which need fix any bugs ? - incorrect graphics - incorrect or bad keyboard controll - too fast games (need slow-down) - game…
... to using a,88 for block 0 2nd screen etc etc ... slow due to having to push and pop bc before paging.
push iy, load iy,23610 rst#38 pop then return ...When would you use LD A,R ?Can anyone tell me a practical use of LD A,R and LD R,A I am confused when you would need to use it? Cheers
[QUOTE=Metalbrain;399421]Fast flag using bit 7 (that ... ...
;****************************************
Interrupt:
push af
ld a ... ; change current beeper routine
pop hl
ld a,(hl ...Trying to repair a 128K (heatsink)I've bought another ZX Spectrum 128K (heatsink model), but unfortunately the last owner did not tell me it did not work.... Because this Speccy also…
... makes the oscillator tick (or copy a proven circuit from elsewhere ... Spectrums. Other candidates include any fast inverter: 74AS04, 74ALS04 or CMOS ... find a complete quartz oscillator block with the right frequency. More ...Memory concerns with z88dkI've retaken my old spectrum project and sadly I've reached a dead end very fast. I'll try to explain my worst problem in a few lines. I'm not a vet…
... will be part of the block that grows upward from 32768 ... to use a 10k free block from address 40000, you would ... /> push hl
XREF music_routine
call music_routine
pop ...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…
... bc with a
push af ;push a out of way for ... /> rst 10h ;print Return
pop af ;get back a
fast? Perhaps even too fast? But, as I ...Most Disappointing Budget Game?I've completed my ten now ([URL="http://jdanddiet.blogspot.com/2010/02/spectrum-budget-games-special-part-2.html"]http://jdanddiet.blogspot.com/2010/…
... is a square box 1 block wide around you! What use ... load. I went through every copy the old guy had and ... as it was a stupidly fast multi event game. Maybe they ... Master Ninja to have reflexes fast enough to play it!
copy of it back home somewhere ...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 ... /> inc d
djnz text3 ;copy 8 bytes of char gfx ... it into attr memory
pop hl ;restore pointer for next ...
