-
BASin release 12c available for downloadHi again, folks - I've had no more reports of further bugs in BASin, so I'm assuming that we've now got a stable editor. Release 12c is now availab…
... : ORG 50000
LD IX, Type
LD DE, #11
LD A, #FF
11-13 11:56 ] -
Saving and loading data in assembly.I want to add a save and load feature to an project I'm working on. Since it's not that much data in size I thought I'd use the ROM functions, but ho…
... 04C6
ld ix, HDR_FILENAME
ld de, #11
xor a
ld b, #28
1:
ld ix, (data_from)
ld de, (data_length)
ld a, #FF
Sort 2 byte words (x, y) on ypos, also question about swap (DE), (HL)Well that was a lot of debugging ;) But if you want a routine which takes an array of 16 byte words x, y and then sort them on y (ignoring x), I'm…
... , af' ; 4
ld a, (de) ; 7
ld (hl), a ; 7
ex af, af' ; 4
ld (de), a ; 7
inc hl ... /> ex af, af' ; 4
ld (de), a ; 7
dec hl ... hl, de
ld e, c
add hl, de
ex de, hl ...IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... TOTALSPRITES 8
#define SPRITESIZE 11
#define RECTTOP 0 ... blanks
SprBlank:
LD DE,blank ; use the same char ... the last blank char
LD DE,blank
CALL AChar
Problem with rotating procedureHi folks! I wrote a proc in z80 asm, based on: x' = x * cos (z) - y * sin (z) y' = x * sin (z) + y * cos (z) I used a precalculated table of sin a…
... /> ld (yc),de
;----------------------------------------------------------------------------
ld de,(xc ... ;----------------------------------------------------------------------------
ld de,(xs) ; ... /> db 11,11,11,11,11,11,11,11
Urgent Help needed to fix this: calling all machine code gurusI am currently trying to write tutorials on the amazing Orfeus music composer by Proxima which allows you to do multi channel music through the beepe…
... /> ld a,(de)
ld (hl),a
ex af,af'
ld (de),a ... nc,l8ad9 ; (4)
cp #11
jr c,l8adb ; (2 ... nz,l8baa ; (-11)
ret
pop hl
ld hl,#005c ...Mode 2 Tile Editor SourceA Timex Mode 2 Tile Editor incorporating a byte mirror table. The compiled version is available in the CSSCGC 2008 collection from the WoS archive. …
...
_1st_128:
ld de,49152 ; first 128 tiles
mirror_byte:
ld de,$0000 ;
ld e,a ;
ld hl,mirror_tbl ;
ld de,($5C4F) ; current start of ... C1,$21,$A1,$61,$E1,$11,$91,$51,$D1,$31,$B1 ...New for 2009 - mc onelinersI found the limit of one line and one screen's worth of program really useful in (re-)learning BASIC, so I've decided to carry the format over into m…
... 3,197,1,255,31,11,120,177,32,251, ... /> ld (hl),a
ld de,9
add hl,de
ld (hl ... ;scroll road
ld de,23295
ld bc,736
lddr ... /> ld (hl),a
ld de,9
add hl,de
ld (hl ... /> ld (hl),a
ld de,9
add hl,de
ld (hl ...Building a menu in ASMWEll as probably some figured, i am learning asm at least to make the basic menu i did in basic. It is a menu where we can select games to be loaded.…
... msg in the table
ld de,strTable ;start of the table ... the table 128
db $11,7,$13,1
db ... ,4," ",$10,7,$11,1,"01",$10,0,$11,7," Alien 8 ... ,4," ",$10,7,$11,1,"02",$10,0,$11,7," Knight Lore ... ,4," ",$10,7,$11,1,"18",$10,0,$11,7," The Great ...Using the stack to copy memory blocksA [b]PUSH[/b] and a [b]POP[/b] instruction together take less time than two [b]LDI[/b], so long [b]POP/PUSH[/b] sequences are sometimes used to copy …
...
ld sp, hl ; 6
push hl ; 11
push de ; 11
push bc ; 11
exx ; ...Keys redefine routine and key check.I have written some asm code which allows me to redefine keys (for a game etc.), and also allows me to be able to check any keypresses for the redefi…
... ; Started on 6th September 2011 @ 11:48am
;
; This ... keys, :)
get_keys: ld de,0 ; DE will hold the bits for ...
;
get_defined_key: ld de,port_array ; the array of rows ...
msg_fire: defm CC_AT,11,8,"Fire ?",255
...saving part of a BASIC programHere's a short routine to save part of a BASIC program. The idea is that it can be merged into a program and then used to save sub-routines, etc. to …
... ";(lz);" as:"'h$(2 TO 11):
IF h$(2 TO ... 11)=" " THEN
PRINT #0;"F ...MCODE problem...Hi Folks, Trying to write a simple machine code program to hatch the screen. So far I have the following but even this is not working - it does not…
... LD HL,4000h
06 AA LD B,AA
11 01 00 LD DE ... ,100h
70 LD (HL ... ),B
23 INC HL
1B DEC DE
Lord Of The Rings; Files skipped ?Hi folks, Does anyone know what blocks 8~13 are for in the Lord of The Rings: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0006601[/url] I…
... Speed ,Pause: 0.001s
11- 396C: -------------------- Length: 11724 Normal Speed ... /> 61440 LD HL,61440
61443 LD DE,23296
61446 LD BC,00144 ... 23310
61454 LD SP,24064
61457 LD DE,00017
61460 ...Indirect Variable AssignmentHere's another wacky routine. This allows assignment of values to variables where the source & destination variables can themselves be defined in var…
... "+CHR$ (a+64),"=",v;
11 PRINT USR id,v$,"=",v ...joining lines of BASICDue to overwhelming demand - well, one demand - well, more of a suggestion, really - here's a routine to join together lines of BASIC. The vertical c…
... Z,CURSDO
CP 11 ;cursor up
JR ... /> LD DE,(23649) ;WORKSP
DEC DE
DEC DE ;DE=end ... 196e ;LINE_ADDR
push de
ld de,(23627) ;VARS
...28-character wide multicolour(ish) on 48k SpectrumLong-time lurker here... I've always been interested in rainbow effects on the 48k Spectrum, mainly from a perspective of "Just what [I]would [/I]ha…
... ,6,7,8,9,10,11), deals with those (four PUSHes ... AF
LD (VALSP),SP
LD SP,HIRES
LD BC,0219H ... up some attribute data
ld de,3344H ; Some more attribute data ... />
HIRON LD A,0FEH
LD I,A
LD BC,0100H ...40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…
... /> ld (de),a
xor a
inc de
ld (de),a
inc de ... =0 01=2 10=4 11=6
defb 0,192 ...BeepFX ProblemHi All, I'm currently trying to integrate the BeepFX engine in my 100% Assembler Game and it plays the sound fine, but then plays the sound again, a…
...
SFXRTl1: add hl,de
ld a,h
SFXRTDUTY: cp ... /> add hl,bc
ex de,hl
pop bc
jr nz,SFXRTl0
ld c,11
jr NEXTDATA
multi-scroll m/c subroutine for BASICArising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. whe…
Arising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. where width is30-column 8x2 multicolor (even in 48K)I don't recall any 8x2 multicolor routine for 30 columns that would work on all Spectrum models (including the Spectrum 48K), so I decided to write i…
... LD DE,nn
LD BC,nn
EXX
LD HL,nn
LD DE ... ; 16057T
PUSH HL ; columns 11 and 12
; 16068T
PUSH HL ; columns 11 and 12
; 16122T
Routine for Currah speechI'm currently writing a routine for the Currah that will provide speech during a game. A timer is set to initiate the speech every 50 cycles of the …
... />
Start: ld hl, Dat1
ld de, 65361
ld b, 15 ;load ... count with 4
Loop: ld ... a, (hl)
ld (de), a ;load allophone in ... ,1,1,1 ;allophone set 11
dat12 defb 1,1 ...Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…
... = LD A,
06 = LD B,
0E = LD C,
16 = LD D ... ,
1E = LD E ... ,
26 = LD H,
2E = LD L,
01 = LD BC ... ,
11 = LD DE,
21 = LD ...Copy 4Kb in Assembly?Here's an interesting problem: what's the best way to copy a block of 4Kb in assembly? The most obvious solution is to use [B]LDIR[/B]: [CODE] l…
... /> [CODE]
ld hl,SOURCE
ld de,TARGET
ld bc,4096
11 bytes.
A straightforward ... /> [CODE]
ld hl,SOURCE
ld de,TARGET
ld bc,4096+128 ...dumping protected BASIC loadersI wrote this a few weeks ago but forgot to post it. It will load & list from tape/TAP/TZX any BASIC program which has been saved with SAVE, including…
... LET ps=FN p(bytes+11): LET bs=FN p(bytes ... POKE mc+4,PEEK (bytes+11): POKE mc+5,PEEK (bytes ... LOAD
LD DE,???? ;DE= number of bytes
LD IX,$7530 ;IX ... = 30000
CALL $0556 ;LD-BYTES
RET
[/code ...DJNZ displacementHi I had a question about DJNZ operation. Just running through this code in MMCOYZXS by Toni Baker page's 87-88 [QUOTE]21A440 LD HL,40A4 11083F …
... />
[QUOTE]21A440 LD HL,40A4
11083F LD DE,3F08
0608 ... LD B,08
1A LOOP LD A,(DE)
ld hl, $40a4
fa03: 11 08 3f ld de, $3f08
fa06: 06 08 ld b, $08 ...byte to screen eventI have another question regarding assembly routine in MMCOYZXS by Toni Baker page's 87-88 [QUOTE]21A440 LD HL,40A4 11083F LD DE,3F08 0608 LD B,08…
... />
[QUOTE]21A440 LD HL,40A4
11083F LD DE,3F08
0608 ... LD B,08
1A LOOP LD A,(DE)
ld hl, $40a4
fa03: 11 08 3f ld de, $3f08
fa06: 06 08 ld b, $08 ...ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…
... 6t - next mem
ld (de),a ; 7t - literal to ... marker?
ret z ; 11/5t - if control is ... /> _ulzfa040:
ld a,(hl) ; 7t
ld (de),a ; 7t < ... below
ret nz ; 11/5t - nope so just ... /> ld e,a ; 4t
ret nc ; 11/5t< ...
