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Fast Binary to Text DisplayI've done this thing that takes some memory contents and converts it to a Binary version of 0's and 1's on screen. However, I've no idea what to use …
... br /> set 2,d ;
ld (de),a ;
dec d ... , if BIT=0 then add +00
ovr0:
... a ;
dec d ;
ld (de),a ;
dec d ... -
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... label up there with the LD BC instruction.
In ...
ld a,$17
ld c,$fe
loop ld b,$40 ...
out (c),a
ld b,90
djnz $
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... /> Why use
[code] ld bc,$fe
out (c),a
[code]
out ($fe),a
[/code]
like ...Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... Why use
[code] ld bc,$fe
out (c),a
[code]
out ($fe),a
[/code]
like ...
[code]
ld hl,0
ld de,freq ;DE: higher ... = higher tone frequency
ld bc,#00FE ;BC: port
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... /> Why use
[code] ld bc,$fe
out (c),a
[code]
out ($fe),a
[/code]
like ... @Hikaru mentioned. With using out ($fe),a, that's impossible because ...Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... describe these patterns. For port #FE, this is either "N:1 ... .
Assuming using OUT (#FE),A / OUT (C),A, with ... A being typically #00, #10 and so on in ...Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... " (add hl,de, ld a,h, out (#fe),a) is more noisy ... hl,de, ld a,h, cp #80, out (#fe),a). In general ...Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... " (add hl,de, ld a,h, out (#fe),a) is more noisy ... hl,de, ld a,h, cp #80, out (#fe),a).[/quote]
Cubic RevealI just though I'd develop this a little further. Written a while ago on a whim! [img]https://dl.dropbox.com/s/p44y5dda49ucmop/square_reveal_1_1.gi…
... jr nc,nlu
ld a,(de)
and b ... ;
ld a,h ;
or a ;is it 00?
... mlp1:
dec d
ld a,(de)
and b ...Cubic RevealI just though I'd develop this a little further. Written a while ago on a whim! [img]https://dl.dropbox.com/s/p44y5dda49ucmop/square_reveal_1_1.gi…
... jr nc,nlu
ld a,(de)
and b ... ;
ld a,h ;
or a ;is it 00?
... jr nz,mlp1 ;
ld d,l ...Cubic RevealI just though I'd develop this a little further. Written a while ago on a whim! [img]https://dl.dropbox.com/s/p44y5dda49ucmop/square_reveal_1_1.gi…
... ;counter in B
ld h,a ;H=00
mask_l:
ld b,h ;B=left hand ... amp; lower CHR line
ld e,a ;
rra ;test ...printing to the screen using pokei remember there being a way to print to the screen using pokes, which would allow you to print a character anywhere in the 175x255 matrix. can anyon…
... 00
;PRINT ROUTINE
PRINT: push de
ld ... ld a,234
ld hl,22528
ld de,22529
ld ... bc,767
ld (hl),a ...printing to the screen using pokei remember there being a way to print to the screen using pokes, which would allow you to print a character anywhere in the 175x255 matrix. can anyon…
... 00
;PRINT ROUTINE
PRINT: push de
ld ... ld a,234
ld hl,22528
ld de,22529
ld ... bc,767
ld (hl),a ...Retro Virtual Machine is out!Fantastic emulator Retro Virtual Machine (@retrovm) is out today. It can emulates Amstrad/Sinclair models range. Give a try! http://www.retrovirt…
Retro Virtual Machine is out!Fantastic emulator Retro Virtual Machine (@retrovm) is out today. It can emulates Amstrad/Sinclair models range. Give a try! http://www.retrovirt…
Retro Virtual Machine is out!Fantastic emulator Retro Virtual Machine (@retrovm) is out today. It can emulates Amstrad/Sinclair models range. Give a try! http://www.retrovirt…
50Hurts - Full-screen 50Hz 1-pixel scrolling on a 128K Speccy50Hurts - Full-screen 50Hz 1-pixel horizontal scrolling on a 128K Speccy. Graphics are an obvious nod to Joffa, whose games and banter were a big ins…
... xor a ;
ld a,5 ;
out ($fe),a ; border change ...
ld de,%0100111101000000 ; attr ... ;
;
ld a,7 ;
out ($fe),a ; border change ...
ld hl,level ; Copy ...im looking for other games like the muncher that use double height and width graphics with colouri havent come across this type of graphics mode on the spectrum before and would like to know if there are any other games that use it.
... SPRITEIT inx, mask, rotator
ld a, (hl) ; sprite byte< ... zoomed sprite byte
ld a, (de) ; mask byte
spritepair1:
SPRITEPAIR #00
spritepair2:
SPRITEPAIR #02 ...im looking for other games like the muncher that use double height and width graphics with colouri havent come across this type of graphics mode on the spectrum before and would like to know if there are any other games that use it.
... /> ;------------------------------
keep_spr_width:
DB #00, #00
keep_spr_div_width:
DB ... #00
; -----------------
reflect_sprite:
ld h, 0 ...Shrinky challengeInspired by this contest on c64: http://nurpax.github.io/posts/2019-08-18-dirty-tricks-6502-programmers-use.html Make the smallest possible .tap t…
... +43h)
0004 54 LD D,H
0005 ... 01 FF AF LD BC,AFFFh
0008 ... 1E 01 LD E,01h
000A ... 24BAh
000D 4E LD C,(HL)
000E ... RST 38h
000F 00 NOP
0010 80 ... />
[code]FF4E 6B LD L,E
FF4F 0D ...Maze Death Race - did it ever work?As a huge Rally-X fan I was always disappointed in MDR, but I cannot remember if that was just because it was a poor clone or if it was also because …
...
| 6787 | 00 -- -- -- | nop
| 6788 | 00 -- -- -- | nop
| 6789 | 00 -- -- -- | nop
| 6793 | CD FE 64 -- | call 64FE
| 6796 ... . It is worked but OUT ($FE),A is the good.
Delay routineAs some people are aware, I have recently starting writing a [url=http://fuse-emulator.svn.sourceforge.net/viewvc/fuse-emulator/trunk/fusetest/]autom…
... /> IF TStates>=131
ld hl,130-TStates : call BobrowskiDelay ... br /> ENDM
@BobrowskiDelay: ld bc,23
.loop23 add ... jr nc,.loop23
ld a,l ; A contains 23 ... + 7+11 = 34t (+8t)
; 00 -> 4+7 + 4+5 ...
