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Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…
... -255) or by memory address (256+). If a character code (0 ... both mask and graphic bytes or just graphic bytes. They can be ... -
FZX Driver for z88dkAn fzx library for z88dk can be downloaded [URL="https://drive.google.com/file/d/0B6XhJJ33xpOWM2hWNjAxMVkxaEk/edit?usp=sharing"]here[/URL]. The libr…
... is made up of 3 bytes which is confusing[/QUOTE]
bytes of system variable FRAMES.
bytes plus the next byte in ... do something like "PEEK 23672+256*PEEK 23673" to read FRAMES ... -
Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…
... which leaves more than 257 bytes for the IM2 table< ... br /> why is bpole 468 bytes after the memset?[/QUOTE]
256-byte page, which means the ... fills the table with $d4 bytes. The z80 will grab two ... table must start on a 256-byte page (LSB=0) ... -
Simple memory transfer routineI'm looking for a simple memory transfer routine that shifts 32 bytes of data from the address HL is set to 55143, I have tried using LDIR, but cant …
... 32 x 256 plus whatever already C held, so 8192 bytes were ... -
IX register - using/problemsAre there any rules on using the IX register? Are there any restrictions on the memory locations that it can access? Yes, I know it's slower than us…
... case scenario that adds 257 bytes plus whatever your Interrupt Service ... a block of more that 256 ff's in the original ... -
IX register - using/problemsAre there any rules on using the IX register? Are there any restrictions on the memory locations that it can access? Yes, I know it's slower than us…
... a block of more that 256 ff's in the original ... and left the first two bytes of each table in tact ... -
Border Tron vector tableI've been trying to use the Border Tron border creator, but the vector table is created where code to my game is at (FE00 I think), how would I go ab…
... located at a multiple of 256 -- this shows up in ... The table size is 257 bytes. Once you have a location ... table address: "LD I,address/256" -- I've taken the ... a multiple of 256, and divided by 256 to get the ... will jump to address x*256+x on interrupt. The ... -
A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…
... FN p(a)=PEEK a+256*PEEK (a+1)
[/code ... a REM line with 'n' bytes of text and a 1 ... -dimension string array with 'n' bytes of text are exactly the ... -
Get rid of 'Bytes:' when loading codeHow do you hide the 'Bytes:' when loading code? I've tried saving as CHR$ 22 + CHR$ 6+ CHR$ 0 (a blank part of the loading screen) but it still appe…
... :
PRINT PEEK 23633+256*PEEK 23634
23739
PRINT PEEK 23739+256*PEEK 23740
2548
Bytes:"). -
Graphics questionHello. I was wondering, does anybody here know of a method to display a large (as in, the better part of the screen) bitmap/raster image using ZX Sp…
... 3: LET da=PEEK 23639+256*PEEK 23640+9
5 ... /16/112 arrangement, in 768 bytes rather than 6912. The save ... quickly from BASIC if the bytes are saved into a string ... -
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... . UDGs come in sets of 256 whether you want them all ... not, each taking up 16 bytes or 4K in total. What ... the first byte of all 256 UDGs, then the second byte ... of all 256 etc. So to find a ... -
Clearing 22 lines of the screenHow do I go about clearing the top 22 lines of the screen and leave the bottom #0 area untouched? I have a routine to reset the attributes, but cant…
... the stack. Bigger at 54 bytes, but probably a lot faster ... /> ld de,$0000 ; de = screen bytes
ld c,8 ; 8 ... de ; b=0, 4096/256=16 bytes per loop
push de ... -
mirroring bitsIf I have a string of 1408 bytes, each of which has one bit 'b' set, what's the shortest way of mirroring that string, so that each bit set at positi…
... hl,$stringstart
ld bc,$bytes
loop:
ld a ... /> And another solution using a 256-aligned lookup table for mirroring ...
ld bc,$bytes
ld d,$lookuptable/256
loop:
A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... (*)
exx
ld hl, 256*N+N ; columns 11 and ... 12(*)
ld de, 256*N+N ; columns 19 and ... a ;8t (2b)
;+8 bytes +46 Tstates
N ...The Evolution of Some Nonsense[center] [B]TIMINGS FOR 100 BOUNCES[/B] [b]Ten Bouncy UDGs in BASIC[/b] [img]http://www.users.globalnet.co.uk/~jg27paw4/pourri/a000test.gif[/img] [u…
... byte - so they're four bytes. This means that your colour ... you like and there's 256 colours to choose from, with ...hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…
... first three & last three bytes, whereas it should be the ... hash table down to 548 bytes.
[code]
3 ... 4: LET da=PEEK 23639+256*PEEK 23640+8:
POKE ... ,da-INT (da/256)*256: POKE 23564,INT (da/256)
5 DIM ...Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…
CLEAR requires just 50 bytes free between the two ... apart from DIM) require 80 bytes. CLEAR 24999 will leave 1244 ... would leave less than 1000 bytes for a BASIC program. ( ... FN p(a)=PEEK a+256*PEEK (a+1): PRINT ... would leave just 344 bytes for those various elementsHelp with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…
... FN p(a)=PEEK a+256*PEEK (a+1): PRINT FN ... 24100 would leave just 344 bytes for those various elements[/QUOTE ...Are there any custom +3 DOS file systems?I'm looking to see if there are any custom +3 DOS disk file systems available rather than the 40 track, 9 sector, 512 bytes/sector (I think that is r…
... of 128, 256, 512, 1024, 2048 and 4096 bytes but as I ... only read discs with 512 bytes/sector.Are there any custom +3 DOS file systems?I'm looking to see if there are any custom +3 DOS disk file systems available rather than the 40 track, 9 sector, 512 bytes/sector (I think that is r…
... of 128, 256, 512, 1024, 2048 and 4096 bytes but as I ... only read discs with 512 bytes/sector.[/QUOTE]
If ... a Record, which is 128 bytes long, but that is more ...How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... table) is at PEEK org+256*PEEK (org+1).
org 23296 ;wherever (249 bytes)
defw SetBLOCK
Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…
... 's still less than 512 bytes I believe but maybe not ... quotient will be less than 256 and you can get away ...Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…
... and you consume single bytes from that. That way ... to read 5 contigous bytes (assume all buffers are ... copying the number of bytes to the designated destination buffer ... , which I think have 256 byte sectors; you could ... if it can do 256/512/1024 byte blocks ...Pac-Land: can be coloured?All versions of this game are full coloured, but not the Spectrum version. It has large sprites, but maybe the scroll is too fine to make a coloured …
... />
;---------------------------
;750 bytes originally for logo graphics, now ... PACLAND
LD HL,8*256+12 ;position: H-row, ... 2014"
LD HL,9*256+7
LD (27415 ... />
LD HL,22528+256 ;yellow attribute of text
quick RAM copy using LET in BASICI'm in the process of reviewing, revising and refining all the programming tips & utility routines which I've posted on this forum over the last eigh…
... br /> [list]
name - 2 bytes
$0e number marker - 1 ... FN p(a)=PEEK a+256*PEEK (a+1)[/b]< ... lo+512 STEP 256: LET aa=((a-lo)/256+1)*16:< ... pa=da+6: LET pv=256: GO SUB 90
... pa=da+15: LET pv=256: GO SUB 90
... POKE pa+1,INT (pv/256): POKE pa,pv-PEEK ( ...quick RAM copy using LET in BASICI'm in the process of reviewing, revising and refining all the programming tips & utility routines which I've posted on this forum over the last eigh…
... FN p(a)=PEEK a+256*PEEK (a+1)[/b]< ... lo+512 STEP 256: LET aa=((a-lo)/256+1)*16:< ... a(a$,b$,da+6,256)
116 GO SUB ... a(a$,b$,da+15,256)
120:
125 ... POKE u,v-INT (v/256)*256: POKE u+1,INT ( ... is a pleasingly coincidental 768 bytes long.
I ...that "listing variables during runtime" thingWell, I did eventually finish this, but with my meds playing up I don't have much time each day that I can spend at the computer, so it's taken rathe…
I've updated FindVars (the precursor to DumpVars) to include the feature from DumpVars which assigns a separate variables area for the routine so its own variables don't get mixed up with the other program (the old version is in the [url=http://www.users. ...From RAM to dim v$() "video buffer" SPEED UP!Hi! This question is related to "quick RAM copy using LET in Basic" ([url]http://www.worldofspectrum.org/forums/showthread.php?t=44296[/url]). Wel…
... copies the first 160 bytes from v$() to the ... FN p(a)=PEEK a+256*PEEK (a+1)
256): POKE pa,pv-PEEK ... (pa+1)*256: RETURN[/code]
... You're copying 160 bytes, which you say is ... characters, which makes 640 bytes by my arithmetic. Then, ...From RAM to dim v$() "video buffer" SPEED UP!Hi! This question is related to "quick RAM copy using LET in Basic" ([url]http://www.worldofspectrum.org/forums/showthread.php?t=44296[/url]). Wel…
... /> 80 LET dw=(PEEK 23627+256*PEEK 23628)+6
...
256*PEEK 23673+PEEK 23672)/50 ... +256*PEEK 23673+PEEK 23672)/50[/CODE]
The RAM bytes ...Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…
... ?
add a,64 ; 64*256 = 16384, Spectrum's screen memory ... , 0 ; each tile is 9 bytes,... 8 for gfx, 1 for ...
