-
Pimp my code...Erm, this is just the result of a mental exercise - I wanted to repeatedly display a UDG but decided against using a ROM routine and UDGs! Any sugges…
... ,#08
;
loop push bc
ld a,b
inc de
ld bc,#0100
ld (hl),a ...
ldir
pop bc
djnz loop
ret ... -
Screen LoaderCouple days ago i find very interesting loader routine in ex Yugoslavia magazine "Svet Kompjutera" from january 1987. Authors of article, calls this …
...
PUSH BC
LD BC,32
ADD HL,BC
EX ... DE,HL
ADD HL,BC
EX DE,HL
POP BC
DJNZ LOPP
JP ... -
Using assembler in SPINI can't get this to work (i.e. display 10): [code]Main LD BC, 10 RET[/code] Any idea as to what I'm doing wrong?
I can't get this to work (i.e. display 10):
[code]Main LD BC, 10
RET[/code]
Any idea as to what I'm doing wrong? -
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…
... l8b53 ; (28)
ld bc,#4297
jr l8b53 ; ... (23)
ld bc,#e01f
jr l8b53 ; ... (18)
ld bc,#c0a1
jr l8b53 ; ... (13)
ld bc,#200f
jr l8b53 ; ... -
ANN: Tipshop updated Thursday, 30 November 2006Thursday 30 November 2006 A big HAPPY 11 BIRTHDAY to WoS... Oh, and a big batch of tips as well :-) * HAPPY 11TH BIRTHDAY, WOS... Thanks for all of…
... new RZX Archive entries for BC Bill , Captain Planet , Chequered Flag ... -
Very OT - SCOTask for the day: Looking at this stock chart: [url]http://finance.yahoo.com/q/bc?s=SCOX&t=6m&l=off&z=m&q=l&c=[/url] ...guess which days each of t…
... ]http://finance.yahoo.com/q/bc?s=SCOX&t=6m ... -
Best replacement for ZTX650?What is the best replacement transistor for the obsolete ZTX650? I've read that TIP31 will do the trick. Is there a decent equivalent from the BC or …
What is the best replacement transistor for the obsolete ZTX650?
I've read that TIP31 will do the trick.
Is there a decent equivalent from the BC or others transistors? -
Problem with SPIN assemblerCan anybody tell me why the following machine code program doesn't assemble in the SPIN assembler? ; my first machine code program ld bc, 5 ret Any…
Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…
... to use the register pair BC for parameters, but i have ...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. …
... ; copy bitmap
ld bc,$17e0 ; offset
add ... cp32bytes ; copy attributes
ld bc,$281e ; offset
sbc ... c,a ;
ld ($4728),bc ;
mirror_attributes:
... c,a ;
ld ($6728),bc ;
call zoom_bitmap ...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…
... one address
ld bc,$0005 ; the new channel takes ... one address
ld bc,chan_4 ; could write the bytes ... one address
ld bc,$15c4 ; address of input routine ... the offset
add hl,bc ; the offset is added to ...Well I'm excited, but I guess you might not beHehe this is as far as I got today, a silly little border program: [PHP] ORG 32768 PROGGY: LD C,255 ; We loo…
... the border
DEC A ; Decrement register A
DJNZ BORDERDOWN ... into A
DEC A ; Decrement it
LD C,A ...Currah MicroSource emulationIt appears to be impossible to emualte the MicroSource in software on the ZX Spectrum SE as hardware polling is required. The following patch is not …
... de,$0000 ; destination
ld bc,$2000 ; length
ldir ... de,$2000 ; destination
ld bc,$2000 ; length
ldir ... ,$18fe ; destination
ld bc,13 ; length
ldir ... de,$0000 ; destination
ld bc,$4000 ; length
ldir ...My little first set of routines.Hi all, I just coded a little set of routines just to draw a screen on video mem and a fade out. I could have just copied the screen rendering rout…
... to draw
dec bc
push bc
ld ... br /> FadeOutPaper:
push bc
ld c,a ;backup ...How do debuggers guess mnemonicsLet's suppose I have the following numbers in Spectrum memory: Address Byte 30000 1 30001 2 30002 3 30003 4 If I execute in assembler j…
How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…
Help hacking Split PersonalitiesI`ve been hacking away at Split Personalities for the purpose of putting new screens and graphics (items). The current screen is at 41187 and is 160…
... /> nop ; 54590 0
inc bc ; 54591 3
ld hl ... /> nop ; 54625 0
inc bc ; 54626 3
ld (33314 ...sound effect code causing crash[FONT=Courier New]I have just written this piece of code to produce a lazer sound effect but for some reason it is causing a crash and I can't figure…
... JR Z,SOUNDOFF
LD BC,65533
LD A,0 ... OUT (C),A
LD BC,49149
LD A,(HL ... LD (LAZERFLAG),A
LD BC,65533
LD A,8 ...A few questions about machine codeOh no... another noob. I'm giving my first steps in assembler (finally, after 20 years stuck in BASIC). I read a SU article explaining that if I wan…
... /> ld hl,24785
ld bc,40832
ldir[/CODE]
bc' sets the amount of bytes ...IY RegisterIve got a really bizarre bug, and I have only just started using the IY register. I seem to remember reading somewhere in a programming book, to neve…
... a double register (HL, DE, BC) for zero?
CarlEasy Compare On 2 Byte Register?e.g. HL, BC, DE Has anybody got a really easy way of doing this without comparing each byte seperately? Any maths has no effect on the flags as far a…
e.g. HL, BC, DE
Has anybody got a really easy way of doing this without comparing each byte seperately? Any maths has no effect on the flags as far as I can tell.Paging MemoryAny idea why this short piece of code doesnt work, just crashes. I am just messing with paging memory in and out (not achived this yet) and reading t…
AY-player from Rastan SagaHello. For what ports #3F, #5F in the given fragment of a code are used? They give What effect in sounding? ================================= F4C1 21…
... 013FFF [B][COLOR="Red"]ld bc,FF3F[/COLOR][/B]
F4D0 ...Graphic equalizer m.c. program neededBack in the 90's I had a full-screen attribute equalizer that was simple, yet very impressive. We used to listen to Vangelis or Jean M Jarre by conne…
... counter is different from zero, decrement that counter by one. This ...Airwolf debuggingI've been trying to fix a couple of things in Airwolf. 1. To pause after death so as to avoid the multiple deaths. As it regenerates the helicopter…
... /> ORG 23760
pause: LD BC,254
IN A,(C ...If you've got a real working MF128,IF1, and MDR combo can I ask a favour?So, if you do have a real Multiface 128, Interface 1, Microdrive and, oh yeah, a Spectrum (48k or 128k) that are all working, can I ask a favour...? …
... (err_sp),sp
ld bc,0 ; clear bc
ld de,gethook ... /> ret
;
gethook ld bc,($00ec) ; return the address of ... HOOK-CODE in bc register
ret
;[/CODE ...help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…
... side to line1
ld bc,$bf00 ;set counter to 191 ... lines
scrlcount
push bc ;save line counter
dontmove ... line road left
pop bc ;recover count for number of ...
