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Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... and ebx,0xFFFFFF ; Mask out alpha
mov ecx,0x00000000 ... ,0x0000FFFF ; Width?
je .out
mov [SOURCEWIDTH ... jne .slow_down
.out: popad
ret
c,a
.c: ld [hli],a
dec c
jr nz,.c
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... you may struggle to snap out of it! The sprite routine ... ,no_right
ld a,c
cp a,SCRWTH-SPRWTH
jr ... ,no_down
ld a,c
cp a,SCRHGT-SPRHGT
jr ...
rrca ;
ld c,a ; Use C as we need B for ...Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... />
start ld a,7 ; A = 7
out (254),a ; Border WHITE
ld a,2 ; A = 2
out (254),a ; Border RED
A' or "A" so 'ld a,'A'' would be 'ld a,65' ... (learn about placing a leading '0' if A,B,C,D,E,F ...Bell sound with PLAY command?Hi Folks, I am no musician so I was hoping someone could give me a PLAY command that would sound like a bell on the Spectrum. A bell that sounds li…
... =0 TO 13: READ a: OUT 65533,i: OUT 49149,a: NEXT i
AY chip has. Altering such values ... sounds.
I wrote a small tutorial about it.
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... z
xor a
out (254), a
ld b, d ... beep1
ld a, 16
out (254), a
ld b, e ...
ld a, c
xor 16
ld c, a
out (254)
ld a, c
xor 16
ld c, a
out (254), a
ld ...Hacking the O.C.P Full Screen Editor/AssemblerIf you have been reading my posts recently then you will know that I am eager to have the sourcecode I wrote for the Spectrum during the period 1988 …
... sourcecode format the O.C.P assembler used. Most ... .C.P assembler has fixed columns and pads out ...
in01 ld (hl),c
inc hl
... br /> ld (hl),c
ld a,254
ld ... a,1
out (254),a
call turbo
xor a
out (254),a ...Challenging Common Knowlege: The +2A/B[I]I was going to write a big long essay about my research on this subject, but being an incredibly lazy person I never really got anywhere with that…
... agonising over these inconsistencies for a while I was talking to ... someone pointed me to a photograph of a +3 motherboard without the ... . It exhibits the same flawed AY sound output as the +3 ... be reverse engineered and traced out from a physical board.
The ...Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... ! Yeah, just testing a version of Cybernoid that ... ; ld a,0
db 211,254 ; out (254),a
... /> Um.. I am getting a little tired as today has ... to clear
; > C = Value to replace
... br />
restore: ld (hl),c ; 1
inc hl ; 1 ...Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... /> z80_stub db 78 ; ld c,(hl)
db 35 ; ... 121 ; ld a,c
db 176 ; or a,b
... ; ld a,0
db 211,254 ; out (254),a
...
.region: ld c,(hl) ; Read count
inc ... BYTE
ld a,c ; Check for zero?
...Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
...
z80_stub db 78 ; ld c,(hl)
db 35 ; inc ... db 121 ; ld a,c
db 176 ; or a,b
db ... 0 ; ld a,0
db 211,254 ; out (254),a
... z80_stack db 113 ; ld (hl),c
db 35 ; inc hl ... t you program it in C/C++ ?" then I'm gonna ...LCD interfacingHas anybody interfaced [url=http://mdfs.net/Info/Comp/LCD]an LCD[/url] to a Spectrum? I'm toying with putting together an interface, a small 32x8 dis…
... blink
OUT (WRINST),A ; out to display
LD A,#80h ; address set ... ; wait until ready
OUT (WRINST),A ; address out to display
LD ... ,DE ; decrement HL
JR C,LOOP2 ; loop if not 0 ...New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... ,0 ; ld a,0
db 211,254 ; out (254),a
z80_stub db 78 ; ld c,(hl)
db 35 ; inc ... /> db 121 ; ld a,c
db 176 ; or a,b
db ... /> z80_stack db 113 ; ld (hl),c
db 35 ; inc hl ...New tool: ZXBOOT.EXE[B]ASM[/B] is proud to present the first release of ZXBOOT.EXE: [url]http://www.4shared.com/file/NP-FVOSf/zxboot__beta_.html[/url] ZXBOOT is a comma…
... the time. It turned out to be inefficient so ... 0 ; ld a,0
db 211,254 ; out (254),a
...
reg_r db 62,0 ; ld a,0 ...
db 79 ; ld c,a
db 237,176 ; ldir ... br />
.copy: ld c,a ; BC = count from stream
What to get for Sound tracker?I'm quite new to world of Spectrum, so need little advice what to buy. I want to make some good AY noises with program called Sound Tracker. Not mu…
... allow you to write decent AY soundtracker style (actually ProTracker ... rar[/url]
..is a simple AY tracker, but its interface ... into .tap files, spitting out both a ZX BASIC version of the ... convert Windows WAV samples into AY samples, using something like ...Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... some intructions that use the A register...
... You cannot specify CP A,7 as the syntax breaks ... that you can miss out the A register as the first ... such as the O.C.P Full Screen Editor/ ... to the data seperated by a comma after the instruction. ...Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... ; Length = length - 1
ld a,c ;
or b ; Best way ... ; Length = length - 1
ld a,c ;
or b ; Best way ... ; Colour for BORDER
out (254),a ; Set BORDER
ret
rrca ;
ld c,a ; Use C as we need B for ...yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... to next
ld a,l
sub c
jr z ... , end ; if l=c goto end
next: ld ... />
cls: xor a ; a = 0
out (254),a ; black border
ld ... />
clean:
rm -f *~ a.out *.o *.rom *.map
[/code]yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... of z88dk still only allocate out of a 64k address space but ... this model requires the compiler (C) to automatically insert bankswitch code ... 4. There will be tiny C compiler. Also small enough to ... OS with this C compiler and bootstrap C compiler (compile it ...Is converting Microdrive formats possible???Hi. First post. I'm a long-time Speccy owner, was lost, but found my way home! :D I have a Disciple as well... Now to my question, but first the …
... possible, they had quite a talented team producing Laser ... really was a bargain. I bought Hisoft C for the ... I dug the manual out again a week or so ago ... itself! I have attached a scan from my scribble ... Laser Genius developers used a proprietary method of saving ...Sprites masterclassHi All, You guys are probably tired of explaining sprites but I'd like to clarify a few things if possible. I've sorted the vertical aspect of scro…
... save space I've taken out the mirror and flip code ... a,(hl)
ld b,a
cpl
ld c,a
ld a ... a
sla a
ld l,a
ld a,c
srl a
srl a
srl a
ZX kempston joystick (through edge) interfaceHello, I am desperatelly loking for purchase of either: 1) ZX Spectrum Kempston joystick (through edge) interface (if there are two joystick ports o…
The bus expander is still cheaper...
And if everyone buys AY chip interfaces for their 48K Speccies then you're out of a job! :DZX kempston joystick (through edge) interfaceHello, I am desperatelly loking for purchase of either: 1) ZX Spectrum Kempston joystick (through edge) interface (if there are two joystick ports o…
... AY chip interfaces for their 48K Speccies then you're out of a ... . I have several interfaces with AY, for 48K models.
AY sound, so I don ... be afraid when appeare two AY engines:
1) ... 8 channels on regular AY
2) SidSound editor ...Need in beta-taster`s helpHello to all. I have developed hard-soft emulator of ZX Spectrum 48, but there are problems in work. My topics is: [url]http://www.worldofspectrum.or…
... this:
EX27: OUT EEARL,A
BST F,HH
OUT EEARH,F
OUT EECR,ONE ;(ONE=0X01 ... )
IN A,EEDR
SBI EEARH,3
OUT EECR,ONE ... H S V N Z C (7...0 resp.)Zombie Zombie Loading SchemeA quick check of the [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0005866"]Zombie Zombie[/URL] loader identifies it's the RAPID LOADING SYS…
... 3e 0f $07ts
out ($fe), a ; 5d74 d3 fe $ ... 5d7c f5 $0bts
ld a, ($5c48) ; 5d7d 3a 48 ... 5d84 0f $04ts
out ($fe), a ; 5d85 d3 fe $0bts< ... 5d8c fb $04ts
jr c, l_5d91 ; 5d8d 38 02 $0c ... 2e ts
l_5e5d: jr c, $5e00 ; 5e5d 38 a1 ...Fray BentosNo not the pies. The FlikR account. I stumbled on this little Gem purely by accident, its full of loads of retro pictures about 20 century Britain. B…
... ? if not then your a lightweight (vile stuff whoever invented ... 't in the same league c'mon.. (says he who ... year ago and it came out top or near the top ... They were surprised it was out of a tin I think
I bought a Mc Vities Jamaican ginger cake ...Spokesman for the EDL?[url]http://www.youtube.com/watch?v=kjuNuqIev8M[/url] lol makes me chuckle everytime i see it, the saviours of britain he cant even ****in string a …
... ignorant buffoon, Joan Collins came out as a supporter despite living in ... a holiday villa in France, you' ... , but you're still a bunch of c*nts.
UKIP: clickRFC: 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…
... br /> defb 10 ; B: integer out of range
crchk ... character
ld c, a ; store in c
ld a, (de) ; read ... character
ld c, a ; store in c
ld a, (de) ; get ... character
ld c, a ; store in c
ld a, (de) ; get ...SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
... /> copy_end:
ld a, 4
out (0xfb), a
ei
... sbc a, a
and 2
out (0xfb), a
ld d, a
jr c, copy_l_2
ld a, 4
out (0xfb), a
... ld a, d
out (0xfb), a
djnz copy_l_4
dec c
SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
... to hold $00
ld c, a ; set the low byte of ... :
ld hl, 0x0000 ; Figure out where the character's definition ... l, a ;
jr c, _end ;
ld a, h ;
add a, 8 ...
ld c, a ;
cntlp:
and a ;
srl c ;
