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why am i getting b integer out of range in this code?ive tried running this in spin but thats what i get [code]main org 40000; ; We want a black screen. ld a,71 ; white ink (7) on black paper (0…
... vertical position of player.
ld a,(ply) ; player's horizontal position ... our temporary screen colours.
ld a,32 ; SPACE character.
rst ... 8k of ROM.
ld h,a
ld a,(hl) ; Get "random" number ... -
Infoseek searches/picturesI have to say that: 1) It's impossible to find some games via infoseek search: S.T.I., W.A.R., F-1 (Zigurat), but I know that games are in database.…
... search: S.T.I., W.A.R., F-1 (Zigurat), but I ... old site): Royal Adventures of a Common Frog, Automonopoli, Go to ... -
esxDOS v0.8.9 has been officially releasedhttp://board.esxdos.org/viewtopic.php?pid=2025#p2025 [quote]lordcoxis Today 12:35:17 esxDOS v0.8.9 has been officially released. Grab it at http:…
... /> [07/03/2021] Z80DMA: Fixed a bug in the sector write sequence ... 03/2021] TR-DOS: Fixed a bug affecting (at least) "Star Heritage ... /03/2021] TR-DOS: Fixed a bug affecting (at least) "Tiratok" ... /03/2021] TR-DOS: Fixed a bug affecting (at least) "Spectrofon" ... -
Remainder (Mod) calculationsI've been figuring out how to calculate remainders after integer division by a constant divisor k (A mod k = A % k). I found that for most small di…
... ld c, a
add a, $55
rra
srl a
add a ... : B=(A//9)*4
LD A,B/RRCA/RRCA gives A=A//9
[code]Mod10 rrca
ld c, a
add a, a
rlca ; left ... -
Trouble with Vortex player compiling in sjASMPlusHaving some trouble with compiling the Vortex Player using sjASMplus and I can't understand the root of the problem. The project can be found at: …
... /> LD A,2 ;PT2,ABC,Looped
LD (START+10),A
ld hl ... -
How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…
... />
LD A,100 ; load the A register (the Z80' ... LD BC,16384 ; BC has 16384
LD A,100 ; A has 100
LD ... (BC),A ; load ... (for instance, to LD A,100 it needs the ... or writes to memory (LD (BC),A) and increases PC. ... -
Shadow of the UnicornI've written a program to run Shadow of the Unicorn on a +2A/+3. Is there anywhere it can be put to be available to anyone wanting to play the game?…
LD A,1 ; any value but zero
AND A ; this will set all ... ????
Give it a try
You must ... AF to 0
LD HL,0
PUSH HL ... -
Calling all coding munkeez...Having spent the last 8 years as a Windows application developer I thought I'd try my hand at a bit of Z80 speccy coding - something I missed out on …
... 8704 bytes to program a full working emulator. ... : Why emulate a Z80 on a Z80, well you ...
LD HL,16384
LD A,(HL)
... must work like this:
LD ... HL,16384
LD A,(HL+higherload) -
Cross compilersAre there any z80 cross compilers out there which will produce spectrum files ready for use? That is to say something which I could copy a load of te…
You might give this a try.....
If ... why don't you write a program
to make ... it a tape-file.
... heart- it will not produce a load error.
After ...
LD IX, STARTADRESS
LD DE,LENGTH
LD A,255
ZX48k terminal...Hello everybody, I thought someone might help me. I connect my good old ZX48k to my PC via serial (IF1) link, and I was trying to write a little term…
... :
ld hl,MyReader
ld (HD_11),hl
... MyReader:
ld hl,SER_FL
ld a,(hl)
and a
jp ...
inc hl
ld a,(hl)
scf
...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... ; compute screenadress
vloop.LD E,A ; position in byte
........PUSH ...
........OR (HL)
........LD (HL),A ; plot the bit
........INC ... /> ........INC H; next screenline
........LD A,H
........AND 7
line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... only need to
LD A,E ; bit from plot co ... bit over old screen
LD (HL),A ; put screenbyte on screen ...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... ; compute screenadress
........LD E,A ; A = nr of bit (0-7 ... , 64, 128)
vloop.LD A,E ; E = set bit
........OR (HL)
........LD (HL),A ; plot the bit
... ........INC H ; next screenline
........LD A,H
........AND 7
line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... call to the plottingroutine to a plotroutine that can calculate faster ... />
I.e horizontal
LD A,L ; old x
XOR ...
JR Z,nochange
LD A,(screenadresslow) ; in fact x-pos ...
ADD A,C
SUB L
LD (screenadresslow),A
line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... ;ld a,(SGNY)
ld d,a
ld a,(deltay)
ld b,a
ld a,(SGNX ... )
ld e,a ...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
...
..........JR Z,OVER8
..........LD A,(SCREENPOS+2) ; HIGH BYTE
..........LD D,A ; HIGH TO D
..........LD A,C
..........XOR ... 8
..........LD A,(SCREENPOS+1) ; LOW BYTE
..........LD E,A ; LOW TO ...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
...
..........JR Z,OVER8
..........LD A,(SCREENPOS+2) ; HIGH BYTE
..........LD D,A ; HIGH TO D
..........LD A,C
..........XOR ... 8
..........LD A,(SCREENPOS+1) ; LOW BYTE
..........LD E,A ; LOW TO ...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... /> ld hl,0
ld (counter),a
ld a,&xx
ld i,a
ld ... hl,&xx00
ld ... de,&xx01
ld ... --
ld hl,(counter)
ld bc,hl
ret ...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... down.
This might be a better way of adding 32 ... l
rlc l
ld a,l
and 240
rlca
rlca
ld l,a
Although it looks ... a bit long winded to me ...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... /> 7 ld h,(hl)
4 ld l,a
7 ld a,(de)
7 or (hl)
7 ld (hl),a ... /> 7 ld h,(hl)
4 ld l,a
7 ld a,(bc)
7 or (hl)
7 ld (hl),a
20 ld ...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... /> ld a,d
sub 8
ld d,a
ld a,e
add a ... ,#20
ld e,a
jr nz,filltab
ld a,d ...
add a,8
ld d,a
cp ...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... LD b,a ; number of horizontal characters
ld a,(pattern)
ld c,a
ld a ... ,e
loop_ch:
ld ...
ld b,a
ld a,1
line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... ,nexty
ld a,l
add a,32
ld l,a
jr ... c,nexty
ld a,h ...
call pixeladdress
ld b,a
ld a,1
jr z ...line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
...
ld hl,PtsTab
ld a,#80
lp_mpt1 ld (hl),a
rrca ... ,$+12
ld a,e
add a,#20
ld e,a
jr ...Assembler code from tutorial, problem!I was wondering if anyone could help me decipher this z80 assembler code? ORG 60000 LOAD 60000 EA60 21BCEA LD …
ld a,80h loads acc with the ... (hl) equals 9, then add a,(hl) makes it 89h and ... inc a makes it 8ah, so cp ...
