-
128k Paging a tile routine to a double bufferHi happy new year all :) Does anyone have an example of how to page a routine to the screen ie a tile routine? Thanks :)
... 128K spectrums
Bits 0,1,2 determine the ram ...
ld a,%00010111
out (c),a
this will ... />
Ld a,%00011111
out (c),a
This will ... -
128k Paging a tile routine to a double bufferHi happy new year all :) Does anyone have an example of how to page a routine to the screen ie a tile routine? Thanks :)
... br /> ld bc,07ffdh
out (c),a
ret
... ret
bankspare equ 0
banksprites equ 1
stack dw 0
tiles: ; tile ... graphics here
tilepos: db 0,0
end start ... -
128k Paging a tile routine to a double bufferHi happy new year all :) Does anyone have an example of how to page a routine to the screen ie a tile routine? Thanks :)
... br /> ld bc,07ffdh
out (c),a
ret
... ret
bankspare equ 0
banksprites equ 1
stack dw 0
tiles: ; tile ... graphics here
tilepos: db 0,0
end start ... -
128k Paging a tile routine to a double bufferHi happy new year all :) Does anyone have an example of how to page a routine to the screen ie a tile routine? Thanks :)
... br /> ld bc,07ffdh
out (c),a
ret
... ret
bankspare equ 0
banksprites equ 1
stack dw 0
tiles: ; tile ... graphics here
tilepos: db 0,0
end start ... -
128K programmingDoes anyone know any good resources on assembly programming for the 128? All I'm after is an "idiot's-getting-started-guide" on how to utilise the…
... used when figuring it out. It's part of ... byte first to bank 0...
out (c),a ; ... make ... 1
; leaving screen 0 visible.
; Changing ... loading :)
out (c),a ; make the switch again ... -
128K programmingDoes anyone know any good resources on assembly programming for the 128? All I'm after is an "idiot's-getting-started-guide" on how to utilise the…
... br /> LD BC,32765
OUT (C),A
[/code]
... ; activates bank 0
LD BC,32765
OUT (C),A
... ; activates bank 0
LD BC,32765
OUT (C),A
... ; activates bank 0
LD BC,32765
OUT (C),A
... -
ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
... ; activates bank 0
LD BC,32765
OUT (C),A
... ; activates bank 0
LD BC,32765
OUT (C),A
... ; activates bank 0
LD BC,32765
OUT (C),A
... -
A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... program the sdcc version comes out 600 bytes shorter. This will ... }, {0,160,88,2,0}, {0,160,120,2,0}, {0,160,56,2,0}, {0,0,0,2,0 ... }
};
// Attach C ... -
Basic Screen Shadow QuestionHello, I've been porting a game to the Spectrum from another platform. So far so good and I have per pixel screen scrolling working really nicely …
... around the ld (0x5b5c),a / out (c),a
as per [url ... /> as per the 128 ROM 0 Disassembly PDF at [url="http ... -
Accessing +3 DOS with DivIDE enabledI'm thinking about making a tool that copies files from a FAT partition to a IDEDOS partition. Currently, I've got two problems: - Getting the ESX…
... ; call dos_init
; jp nc,0
; ld a,'A ... call dos_open
jp nc,0
ld bc ... call dos_read
jp nc,0
ld b ... /> ld (23388),a
out (c),a
ei
... because of the USR 0 environment. At first I ... -
Interrupt routineI have been trying to create an interrupt routine for playing AY music in the background but cant seem to get anything working. I have a music rou…
...
ld bc,32765
out (c),a ;bank 6
ld bc,32765
out (c),a ;bank 0
ei ;enable ... -
New Game - Pietro Bros [z88dk/Nirvana+][b]PIETRO BROS[/b] Pietro and Luizo were transported to pipe world after eating some rancid mushrooms on his pizza. Help them to escape from th…
... br /> ld a,$04
out (c),a ; +2A/+3 : disk motor ...
ld a,$10
out (c),a ; 48k rom selected, bank ... />
jp c, __LOADER_head
rst 0 ; if tape loading ... -
New Game - Pietro Bros [z88dk/Nirvana+][b]PIETRO BROS[/b] Pietro and Luizo were transported to pipe world after eating some rancid mushrooms on his pizza. Help them to escape from th…
... />
jp nc, 0 ; if tape loading error
jp nc, 0 ; if tape loading error
out (c),d ; restore BANK_00
ld ... -
Comp.Sys.Sinclair Crap Games Competition 2017As the creator of the second-least crap game in last year's competition (and the only mug stupid enough to agree to host it this year) I am proud/ash…
... can strip it all out and write your own ... buffered screen completely to attribute 0 (black).
0: BORDER 0: BRIGHT 0: FLASH 0: INVERSE 0: CLS
0: NEXT b
140 LET c=0: IF s>0 THEN LET c ... =1 THEN LET c=c+1+(c=-1)-15*(c=7)
... -
c64 .sid player coming soon to specy 128!!!c64 .sid player coming soon to specy 128!!! the first old version uses only square waves, 4 years ago: https://www.youtube.com/watch?v=6CKt9noxA7s…
... out (c),a ;select AY register 0
ld b,#BF
out (c ... br /> .AY_found
out (c),l ;select "AY register 16 ... the contents of the register 0 (#40)
...
... 128K page switching using OUT (nn),A should be ... -
c64 .sid player coming soon to specy 128!!!c64 .sid player coming soon to specy 128!!! the first old version uses only square waves, 4 years ago: https://www.youtube.com/watch?v=6CKt9noxA7s…
... banks stay at 5/2/0. YM tap version. ... br />
Bit 0: Paging mode. 0=normal, 1=special
ROM 0: 128k editor, menu system ... : Disk motor; 1=on, 0=off
Bit 4: ... /> ld bc,1ffdh
out (c),a
ld a,10h ... -
c64 .sid player coming soon to specy 128!!!c64 .sid player coming soon to specy 128!!! the first old version uses only square waves, 4 years ago: https://www.youtube.com/watch?v=6CKt9noxA7s…
... ),a
out (c),a
ei
ld de,0
ld ...
ld (0x5b5c),a
out (c),a
ei
ret ... -
New ZEsarUX beta - RC2Hi I have uploaded a new ZEsarUX beta version on the usual url https://sourceforge.net/projects/zesarux/files/Beta_and_Snapshot_versions/ This…
... LD A,ZXIPORTCHR
OUT (C),A
LD BC ... 0..255
LD BC,ZXIPORTREG
LD A,ZXIPORTNUM
OUT (C ... LD A,ZXIPORTCHR
OUT (C),A
LD BC ... -
128K memory bank selection to avoid contention issuesI'm currently developing a game and I'm trying to get my head around the memory contention issues of the various 128K/+2/+2A/+3 spectrum models in or…
... number of required memory page (0..7)
; A's ... /> ld (varCurPage), a
or 0
@varCurScreen: EQU $-1 ; ... br /> ld bc, #7FFD
out (c), a
ret[/code]
0..3 are always uncontended and ... -
How much can you get into 48k?Todays experiment was to see how long, how much text, a PRINT statement will hold. I filled it up with * and counted them and got 689 chrs. Almost 22…
... wrong with this? B integer out of range 30:1
10 LET L=0
20 FOR C=0 TO 31 STEP 1 ...
30 PRINT AT L,C;"0 ... "
40 NEXT C
50 IF C=31 THEN ... -
How much can you get into 48k?Todays experiment was to see how long, how much text, a PRINT statement will hold. I filled it up with * and counted them and got 689 chrs. Almost 22…
... wrong with this? B integer out of range 30:1
10 LET L=0
20 FOR C=0 TO 31 STEP 1 ...
30 PRINT AT L,C;"0 ... "
40 NEXT C
50 IF C=31 THEN ... of the error to find out what is happening.
hacking controls for atic atac?I was wondering if there is any way to hack in game controls? In particular for Atic Atac. I prefer to use keyboard controls for most games, but the …
... to try to figure out the codes for each ... tipshop. Just gotta figure out how to use it and ... BLOCKSTART 45306
LD C,0
LD A,251
SET 0,C
BIT 2,A
SET 4,C
RET[/code]
< ...Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…
... . How do I find this out ?
[code]
org 33000 ... , 175
ld b,0
ld c,0
LOOP:
push ...
inc b
inc c
pop af
dec ...Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... in a row to break out of the loop:
1$
ld c,0 ;[7]
ld a,e ... nz,1$ ;[10]
ld c,0 ;[7]
ld a,e ...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…
... B = Y-position (row), C = X-Position (column).
ld c,0 ;BC now holds Y-position ... / 2
rr c ;Catch carry bit by rotating ...
ld b,0
ld c,a ;X-position returns ... address you just worked out! You might want to ...
