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Spectrum Screen RAM layoutHi there The spectrum screen layout is rather odd. It seems to be arranged into 3 256 byte groups. If I have an x (horizontal) coordinate (from…
... 100 PRINT base+2048*t+32*r
200 NEXT r ... PACALC LD A,(POSX)
ADD A,A ;Table has 2 ... ..
LD BC,PREC_X
ADD HL,BC ;"PREC_X" + 2*POSX ... br /> LD A,(POSY) ;Add the Y-Postition (POSY).
LD L,A
ADD HL,DE
... -
ZX Uno programming competition[b]Rules[/b] - The game tematic is free. The languaje can be english or spanish. - You must use Radastan video mode in the game as principal. - …
... change to next line only add 64 bytes). Each pixel use ... /forum/download/file.php?id=32&t=1[/img]
New hardware for saleAll prices include shipping costs to EU. ComCon: 22 euros. https://www.youtube.com/watch?feature=player_embedded&v=3e9i5rLnjy8 [img]http://zonad…
I add this new cartridge (compatible with original IF2) with 32 games/roms for 12 euros, shipping included.
[img]http://www.va-de-retro.com/foros/download/file.php?id=1253[/img]Problem with BC corrupting after DJNZJust for fun, I'm messing around trying to get the level maps from Lemmings to display on the screen with machine code. It's been ages since I did an…
... 't need to add 256, I need to add 256-32 to get ...Problem with BC corrupting after DJNZJust for fun, I'm messing around trying to get the level maps from Lemmings to display on the screen with machine code. It's been ages since I did an…
... />
LD BC,32 ; SET THE COUNTER FOR 32 CHARS
LDIR ... A LINE OF THE SCREEN, 32 CHARS
POP DE ; Get ... screen address
INC D ; ADD 256 TO SCREEN ADDRESS TO ...Problem with BC corrupting after DJNZJust for fun, I'm messing around trying to get the level maps from Lemmings to display on the screen with machine code. It's been ages since I did an…
...
LD BC,32 ; SET THE COUNTER FOR 32 CHARS
LDIR ... A LINE OF THE SCREEN, 32 CHARS
POP DE
32 ; 32 CHARS TO THE NEXT MAP LINE
ADD HL,BC ... ,A
AND 248
ADD A,D
LD D ...Text scroller and custom fontYesterday I was testing this text scroll routine taken from Jonathan Cauldwell's Intro Maker (labels have been inserted to allow partial code relocab…
... 128+64+32 now 4+2+1)
ADD A,060 ; add on ... ,0
ADD HL,HL
ADD HL,HL
ADD HL,HL ... its minus 256 -> 32*8 )
ADD HL,DE ; HL now ...Best Z80 Assembler for PC?There's probably already a thread for this so if somebody could please point me at it I'd appreciate it. If there isn't then please respond here wit…
... , can include binary data, has 32 bit constants, JR promotion and ... .
I continue to add features as I or others ...A new emulator is in townHello, I'd like to announce a new ZX Emulator, it's Spectacol (https://github.com/bog-dan-ro/spectacol) a free (GPLv3+) emulator which currently t…
... /bog-dan-ro/spectacol/issues/32
[quote="AsSeMbLeR;856717 ... -dan-ro/spectacol/issues to add all the problems/sugesstions you ... -dan-ro/spectacol/issues to add all your ideas (no matter ...(Collected) Darkhog's noob question about z80 assemblySince when I'm learning new language or library, I tend to ask lots of stupid (for any advanced person) questions and I don't want it to have mess up…
[quote="Darkhog;52514"]
- Regular IF z80 equivalent. e.g. If ADisappearing/appearing effectI remember doing a small routine in BASIC which could be used to cover the attributes section randomly, until all 704 characters were filled with the…
...
ld a,(XS)
add a,(ix+2)
ld ... R mod U
defb $32 ;mod_div
defb $02 ;delete ... =RAMTOP
inc hl
add hl,bc ;HL=coords address ...Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... .
LD IX,-2
ADD IX,SP
LD SP ... .
LD IX,2
ADD IX,SP
LD SP ... />
ld ix,0
add ix,sp
; ix ... /> jr $
....
buffer: defs 32
....
Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
[quote="slenkar;857988"]
So using IX and IY is a bit more generic and easy but has a size and speed penalty?
[/quote]
It is easy but it's not always slower nor is it always bigger. If you can't hold the current working set of ...Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…
... + hrow*2048 + LINREPT*512 + lrow*32 + 16
ENDM
ENDM ...
ld sp, 12
add ix, sp
; read ...Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…
... + hrow*2048 + LINREPT*512 + lrow*32 + 16
ENDM
ENDM ...
ld sp, 12
add ix, sp
; read ...Bored of the Rings coded messageI was browsing [url="https://tcrf.net/"]The Cutting Room Floor[/url] recently and stumbled upon the entry for [url="https://tcrf.net/Bored_of_the_Rin…
... . (B=50+16, E=37+32, S=99-16, T=132 ... .
REM For extra words, add DATA on lines 6-15 ... ,200,168,123,226,205,32:
DEF FN c(a ...z88dk Font ChangeHi, I'm working in a couple of games, but Have someone some code to help on change the z88dk stlib font? Just one working example... Regard…
old c library, 32 columns...stdlib.h
I'm using standard printf.
int zx_print_at(unsigned char p_row, unsigned char p_col, char *s) {
p_row += 0x20; // add displacement
//s_colBored of the Rings coded messageI was browsing [url="https://tcrf.net/"]The Cutting Room Floor[/url] recently and stumbled upon the entry for [url="https://tcrf.net/Bored_of_the_Rin…
... the 22 codes used (excluding 32,33) there are only five ... positions, then a letter to add, or SPACE to remove the ...Bored of the Rings coded messageI was browsing [url="https://tcrf.net/"]The Cutting Room Floor[/url] recently and stumbled upon the entry for [url="https://tcrf.net/Bored_of_the_Rin…
... ix+0)
add hl,de ;add character code to ... 200,168,123,226,205,32
defb 60, ... 203,35,204,32
defb 54,204 ... ,35,63,203,32
defb 135, ... 133,149,132,149,132,32
defb 50, ...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…
... the listing below I will add some notes about the changes ... /> struct sp1_Rect levelbrect = {0, 0, 32, 24}; // full screen
unsigned char levelb[32*24*3];
TommyGun's getting a Debuggerhttp://youtu.be/B_kZVRvYV98 I have always wanted to debug the programs I write in TommyGun using TommyGun instead of the debuggers in emulators. …
... that is when I will add it.
Also; there is ... , 0, 0, 0, 0, 0, 32
It could support for ...Character Based SpritesHi, I'm working through Jonathan's excellent guide to writing games, and have mastered the animation of single UDGs. Before or move onto Pixel…
... br />
ld b,32 ;16 lines per tile
ld bc,32
add hl,bc
... br />
ld bc,32
add hl,bc
... br />
ld bc,32
add hl,bc
... ld a,e
add a,32
ld e,a< ...Help needed with MIA software with custom (?) loaderHi, I've got into my hands recently a bunch of Polish educational software which are unknown MIA on WOS. I believe they are protected with some…
... table. (ROM)
0x5B35 ADD HL,BC ; The required offset ... and (ROM)
0x5B51 ADD HL,BC ; index into the ... compute (ROM)
0x5B53 ADD HL,BC ; the starting address ... ; Claim 32 bytes
0x5BE3 ADD HL,DE ; Add to current ...Fuse for Mac OS X 1.2.2 ReleasedA new version of Fuse for Mac OS X has been released at the dedicated sourceforge project: http://sourceforge.net/projects/fuse-for-macosx/ Not…
... /> [code]8/31/16 10:32:39.316 AM Fuse[1573 ... in libdispatch client: kevent[EVFILT_MEMORYSTATUS] add: "Operation not supported" - 0x2d
8/31/16 10:32:39.471 AM Fuse[1573 ... />
8/31/16 10:32:39.495 AM Fuse[1573 ...2x2 tile to attribute blocksHow do you go about converting a 2x2 tile to 16 x 16 attributes? Heres an example of the tile data I'm wanting to enlarge. [code] defb 255, 25…
... line, 4 chars in
ADD HL,BC
POP BC ... /> drawsection4
LD B,4 ; 32 chars of a line (4 ...2x2 tile to attribute blocksHow do you go about converting a 2x2 tile to 16 x 16 attributes? Heres an example of the tile data I'm wanting to enlarge. [code] defb 255, 25…
... LD BC,8
ADD HL,BC ; move screen ... 4 chars in
ADD HL,BC
POP ... br /> LD B,4 ; 32 chars of a line (4 ...Spectrum NextHi Folks, Just wondering if anyone has heard any news about the Spectrum Next project/machine? Many thanks Paddy
... have made it easier to add custom rom sets rather than ... size (1,2,3 = 16/32/64k roms)... It might still ...
