-
High score table routineI wrote this general purpose high score table routine. It stores 5 scores and displays them alongside the player names, which are 8 characters long. …
... />
LD A, 64
LD (23693),A ; PAPER 0, ...
LD A,3 ; set A as a counter if we ... :
LD A,8
LD (FLAG2),A ; Caps Lock
LD A,2 ; upper screen ... -
Name the game using regular expressions!I've got 14 ten character titles (Including spaces. No numbers. [A-Z/s]+ if you like :) ). All the first characters match the first line of regular e…
... /> [HMORS]+
[BT]+A+
R+OS+
A+SH+
So ... last column AASHH corresponds to A+SH+.
Go it ... ]+A+Y
[AUO]+A+T+[ERY]+T+NJ
[BDO]+T+R ... ]+
FD+[\sBCHLNTWZ]+R+
I+A+[ABNOT]+O+A
[CEIKNORSVZ]+M ... -
Flood Fill IssueHi Folks, Came across the following Flood Fill routine by John Metcalf: [code]; scanline fill by John Metcalf ; call with d=x-coord, e=y-coo…
... br />
nextrun:
ld a,d 60007 7A
and ... inc a 60010 3C
ld b,a 60011 47
ld a,1 60012 ... AB
ld h,a 60072 67
ld a,l 60073 7D ... 0F
ld l,a 60081 6F
ld a,b 60082 78 ... -
Using BASIC from Machine CodeHi Folks, Came across a very interesting article by Toni Baker in Your Spectrum: http://www.users.globalnet.co.uk/~jg27paw4/yr11/yr11_66.htm …
... ]
ORG 62000
LD HL,TEXT
CALL BASIC ... /> CALL 5808
LD HL,(23641)
LD BC,130
CALL ... ,BACK
PUSH HL
LD (23613),HL
CALL 7050 ... ),HL
CALL 5808
LD A,(23610)
CP 255
1k Chess (was the 924 bytes thing!)Hi, I've decided to do a major rewrite of large parts of the code for the isometric Chess thing that I've been messing with. It got to the point, …
... /> rl (hl)
sbc a,a
ld (de),a
inc e
ld b,04h
ld c,l
ld a,(de)
Can't Get My Simple Code To RunHello again, I'm trying to run the following simple code: [code] org 32768 main ld b, 21 ; x coordinate is …
... ***************************************
drawText
ld a,2 ; upper screen
... ***************************************
setXY
ld a,22 ; ASCII control code ...Strange behaviour in very simple ASM program.Someone sent me this and it shows something strange. Here's the BASIC listing [code] 10 CLEAR 32999 20 FOR n=33000 TO 33009 30 READ a: POKE n,a …
... 33009
30 READ a: POKE n,a
40 NEXT n ... be.
[code]
ld a,5
ld b,2
sub ... b
ld b,0
ld c,a
ret
a +2A/B/+3 then no ...Need help with keyboard scanning ?After getting frustrated with learning ASM for a while I'm back into it. The little listing below is using the ROM's PRINT AT routine to draw me a sp…
... frustrated with learning ASM for a while I'm back into ... AT routine to draw me a sprite to the screen. What ... /> [code]
LD HL, UDG
LD (23675),HL
LD A,2
MAIN:
CALL DRAW
LD A,(INKEY)
CP 13
Other than using attributes what other ways to detect collisions, when using char based movement?So I'm slowly working out the bits and pieces to write a game completely in assembly. I've been using attributes when writing in BASIC to detect whet…
... /> [code]
ld hl,22528
ld a,10 ; This the ... row number
ld bc, ... /> push bc
ld bc,32
LOOP:< ... add hl,bc
ld a,(hl) ; a now holds the required ... from subroutines in assembly with a return value. Ie
Detecting +3 / +2AWhat's a simple but reliable way to detect if code is running on a +2A/+3? My first though was to try switching to ROM2 and then checking for the …
... />
[code]detect ld bc,$7ffd ; official paging port ...
ld hl,$c100 ; address in upper ... test byte
ld b,l ; port 00fd - works ... change to page 0
ld a,(hl) ; read byte
...No-tearing (“vsync”) Full Screen FadeSeeing as most screen fades exhibit visible tearing, I wrote my own routine which does away with that problem. Simple, effective, short, and fully re…
... reach active screen area,
ld a,d ;plus generous overlap to ... br />
fade1 ld a,(hl) ;read attr into A
and 7 ... , decrement INK
f1 ld a,(hl) ;reload A with attr
and ... /> inc hl ;next cell
ld a,h
cp $5b ;past ...How to avoid flicking? IM2 help.Hi, I have started on a quest to make a demo for ZX Spectrum. However the display is flickering and I guess it is something about updating at…
... /> ld a,(pattern1)
ld bc,three_lines
ld (hl),a
ldir
ld a,(pattern2 ... /> ld a,(pattern1)
ld bc,four_lines
ld (hl),a
ldir
ld a,(pattern2 ...Non-repetitive RNDHi guys) Perhaps, some of you already encountered a situation, when one needed a set of [b]unique [/b](pseudo-)random values, say, from zero to 25…
... already encountered a situation, when one needed a set of ... ]filling [/i]up a DIM or a string via
...
LET A(i)=A(r)
LET A(r)=z
... abuse the entropy, getting a sequence of unique values ... /> So, is there such a trick, and how feasible possible ...Printing text, part MMXIIXI'm pretty sure there's been a zillion threads about this already, and I don't think it's the first one by myself either, but here goes. Proportiona…
Printing text using direct screen addressingHaving some problems printing using the FASE engine which is currently defeating me. Hoping to have someone clear out the bit of fog currently dwell…
Having some problems printing using the FASE engine which is currently defeating me. Hoping to have someone clear out the bit of fog currently dwelling in my brain for this function. I'm trying to get the text working properly in 128k mode which uses ...Unintelligible speech in games, what does it say ?This came up on FB yesterday, someone posted a quirky Bug Byte title it has bit of sampled speech but for the life of me was I can't figure out what …
... FB yesterday, someone posted a quirky Bug Byte title it has bit ...predetermined number of loops in assemblerhi, i have this code that i have already written org 40000 ld c,33 ld (23612),a ld a,c rst 16 inc c jp 40001 but i only want to loop i…
... 40000
ld c,33
ld (23612),a
ld a,c
rst ... do this? i have had a look round the web but ... cant find a simple explanation.
also ...counting in assembleri have this program which cycles through the character set. how do i do this with numbers say 0 to 65535? org 40000 ld b,120 ld (23612),a L…
... 40000
ld b,120
ld (23612),a
LD A,2
CALL ... 5633
ld c,33
loop LD a ... /> LD a,00
RST 16
LD a,00
RST 16
ld a ...esxDOS v0.8.7 releasedesxDOS v0.8.7 has been officially released. Grab it at http://www.esxdos.org/files/esxdos087.zip. This version has the following (notable) new fea…
... /05/2018] FAT Driver: Fixed a bug that prevented writing the EEPROM ... /2019] FAT Driver: Fixed a critical bug (introduced in v0.8.6 ... ?id=490]here[/url] for a description of the problem and ...Help With infinite music on 128KHi :) I'm trying to play infinite simple music on 128K , but i don't know what is wrong with the loop I tried this routine but doesn't work I…
... hl
ld (hl), hiRSI
ld a,$FE
ld i,a
im ... />
bucle
ld a,(hl)
or a
jr nz,waitSound ... /> out (c),a
inc hl
ld a,(hl)
ld b,$BF ...Currah uSpeech ROM Paging and BootyHi, When I emulated the Currah uSpeech for [url="http://www.inkland.org.uk/inkspector"]InkSpector2[/url], I made it page in its own ROM on memory …
... br /> ld hl,$a06c
ld de,$fffb
ld bc,$0064 ... collected:
ld a,$11
rst $10 ... ,$ff15
A conditional jump to address $ff15 ... br /> pop de
ld d,b
di< ... dec c
adc a,$0b
call po ...im having problems with zx spin. im getting invalid combination of opcodes and operands errorim trying to assemble this program: [code]org 40000 ld a,0 call 8859 ld (iy+83),7 ld a,2 call 5633 call 3435 ld a,2 call 5633 ld de,d…
... /> ld a,0
call 8859
ld (iy+83),7
ld a,2 ...
call 3435
ld a,2
call 5633
ld de,data //************ here *************
ld bc,12
how do i set this code up, so i can print more than one line of text?well i got it working but how do i set this code up, so i can print more than one line of text? with a loop or something? not sure where to start on …
... one line of text? with a loop or something? not sure ... /> ld a,0
call 8859
ld (iy+83),7
ld a,2 ...
call 3435
ld a,2
call 5633
ld de,data1
ld bc,36
call ...
