-
Nintendo shares slump...Hi Folks, I see that Nintendo's share price has slumped after poor results and luke warm sales of the 3DS console. [url]http://www.bbc.co.uk/news/b…
... backdrop on the upper screen. Right, I will copy a picture of ... memory. I know, I will pop an SD card in to ... -
How to get a minimal splib2Hello. We are designing a new engine and stuff, coded in ASM and to be used from z88dk. I was just wondering how to get a minimal splib2 with just th…
... 1
push ix ; save function pointer used ... and HL are parameters
pop ix
...
// ^^ initialize screen address of each character squar ... -
Casstte 50 compilation emulator game questionHi - Hope this is the right place to put this question? Wasn't sure? But I have just downloaded the 'Cassette 50' compilation from wos but can't w…
... program header
POP IX
PUSH IX
LD ... ,BC
PUSH HL
POP DE
PUSH DE
... SBC HL,BC
LDIR ;copy ... -
BUZZSAW+ Demo No. 3Right, another demo of BUZZSAW+. [URL="http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_3.tap"]Joefish_Buzzsaw_Demo_3.tap[/URL] The default con…
... the timing works on a POP/PUSH copied rainbow generator instead of ... 128K so I can use screen paging too.
I ... -
Keys redefine routine and key check.I have written some asm code which allows me to redefine keys (for a game etc.), and also allows me to be able to check any keypresses for the redefi…
... /> call ROM_CLS ; do the clear screen
ld hl,msg_define
push hl ; save the message address
ld a,2 ; upper screen ...
call CHAN_OPEN ; get the channel sorted
pop hl ... -
Tile based graphics and scrolling thingy...Here's my best attempt so far at a tile based rendering and scrolling routine. It draws in 22 8*8 graphics tiles along the top of the screen (junk i…
... ; Point to next screen position before POPing HL ... Preserve registers
push de
push bc
push af
...
pop af
pop bc
pop de
pop hl ;
scrntab defw 16384 ;screen address table
defw ... -
Tile based graphics and scrolling thingy...Here's my best attempt so far at a tile based rendering and scrolling routine. It draws in 22 8*8 graphics tiles along the top of the screen (junk i…
... part...
[CODE]tile_line_loop push hl ; Store HL before calculating ... ]scroll_loop pop de ; POP next destination address 10
pop hl ; POP source address ... sprtites and leaving the background screen intact as it scrolls down ... -
Tile based graphics and scrolling thingy...Here's my best attempt so far at a tile based rendering and scrolling routine. It draws in 22 8*8 graphics tiles along the top of the screen (junk i…
... print position
tile_line_loop push de ; Store current print ... ld (de),a ; Write to screen
inc d ; Point ... /> inc hl
pop de ; Restore DE and ... -
Tile based graphics and scrolling thingy...Here's my best attempt so far at a tile based rendering and scrolling routine. It draws in 22 8*8 graphics tiles along the top of the screen (junk i…
... since you can keep the screen address directly in the stack ... tile_line_loop ld d,64
push hl ; Store HL before calculating ... /> ld (de),a ; Write to screen
inc d ; Point to ... /> ld (de),a
pop hl ; Restore HL and point ... -
Tile based graphics and scrolling thingy...Here's my best attempt so far at a tile based rendering and scrolling routine. It draws in 22 8*8 graphics tiles along the top of the screen (junk i…
... ago to blank out the screen by pointing SP to it ...
pop bc ; 10
pop de ; 10
pop hl ; 10 - POP 8 ...
push de ; 11
push bc ; 11
push af ; 11 - PUSH 8 ... -
FN nesting error?While playing with FN functions that call assembly, I've found something weird. Check out this code: [code]10 DEF FN f(a,b)=a+b 20 PRINT FN f(FN f(…
... advances HL past '('
PUSH HL ; save start address in ... space:
[code] POP HL ; pop the start address in DEF ... from stack.
LDIR ; copy value into DEF FN statement ... -
Pixel engines for explosions...Hi... Iv a strange request... I was toying around with an old YS program, which can be found here: [url]http://www.users.globalnet.co.uk/~jg27paw4/ty…
... POP IX
EI
RET
L61559: PUSH BC
PUSH DE ... br /> L61715: PUSH DE
CALL L61722
POP DE
AND ... /> DEFS 172
SCR_TABLE: ; SCREEN ADDRESS TABLE NOW FOLLOWS IN ... -
Pixel engines for explosions...Hi... Iv a strange request... I was toying around with an old YS program, which can be found here: [url]http://www.users.globalnet.co.uk/~jg27paw4/ty…
... eb $0cts
l_f073: pop ix ; f073 dd e1 ... c9 $0ats
l_f077: push bc ; f077 c5 $0bts
pop de ; f10a d1 $0ats
pop de ; f152 d1 $0ats ... 00 ts
;
; screen address table
;
... -
Requesting a little help to identify the purpose of this 'add-on' to my Issue 2Hi everyone First of all it's my first post here so please go easy on me! I'm grateful to be accepted into your fine little club :smile: I probabl…
... I had LOAD "" up on screen. Who needs a keyboard when ... /> fallo push hl ;put offeding address into BC
pop bc ;to ... -
Pixel engines for explosions...Hi... Iv a strange request... I was toying around with an old YS program, which can be found here: [url]http://www.users.globalnet.co.uk/~jg27paw4/ty…
... : POP IX
EI
RET
L61559: PUSH BC
PUSH DE ...
L61715: PUSH DE
CALL L61722
POP DE
AND ... page boundary
SCR_TABLE: ; SCREEN ADDRESS TABLE NOW FOLLOWS IN ... -
New WIP underway - 'Dingo'.Hi, Prepare for a long post. Perhaps I can even challenge ewgf here. :razz: Anyway, I've been meaning to get into Z80 programming and making a game…
... /> call ROM_CLS ; do the clear screen
ld hl,msg_define
push hl ; save the message address
ld a,2 ; upper screen ...
call CHAN_OPEN ; get the channel sorted
pop hl ... -
128k multicolour graphics...ok over the years I've been a fan of multicolour graphics on zx spectrum, an I clearly get that on a 48k the (8x1@2)multicolour limit stands at 18cha…
... aowen's ld/push method, or 16 for safer pop/push method. But ... , is it possible to change parts of the screen ... so selected parts of the screen is 8x1 ... under 1 raster line, and screen switching only gives us 4 ... -
128k multicolour graphics...ok over the years I've been a fan of multicolour graphics on zx spectrum, an I clearly get that on a 48k the (8x1@2)multicolour limit stands at 18cha…
It's tricky. The POP/PUSH or LD/PUSH method works because you then ... PUSH the data to successive memory ... and right edges of the screen, is each line has slightly ... be as long as the screen memory itself and custom-written ... -
Up/Down Left/Right scrollCan anybody give a newbie some pointer to simple one char scrolling by pixel? I've looked at a lot of resources, but as you can imagine, it's all a …
... address
push bc
push hl
...
join:
push hl ; save display address so ... in characters
; hl' = screen address
; b' = pixel ... br /> exx
pop hl ; restore screen address so that it ... -
New SpecBAS available - v0.710Been a while, but I've just uploaded the latest build of SpecBAS. This one now supports tilemaps (with rotation and scaling) and added OVER mode (XO…
... ?[/quote]
I shall pop an archive of demo programs ... -
New SpecBAS available - v0.710Been a while, but I've just uploaded the latest build of SpecBAS. This one now supports tilemaps (with rotation and scaling) and added OVER mode (XO…
[QUOTE=Dunny;579193]I shall pop an archive of demo programs ... -
tiny routine to shift RAMTOP & stackCompressing some data areas above RAMTOP and wanting to make the released space available for BASIC arrays, I needed to move RAMTOP without using CLE…
... , NEXT_3 ; 32 244
PUSH HL ; 229
SBC HL ...
LDDR ; 237 184 ;copy old GOSUB stack
INC ... br /> POP BC ; 193
LD SP, HL ; 249
PUSH BC ... -
Auto generated spritesLooking around for some graphics I came across [url]http://blog.disktree.net/?p=19[/url] , one of several such pages. Need the odd 8x8 UDG or two (…
... routine so using ROM, upper screen
call 5633
ld ...
push af ;save it
call mirrorbyte
pop af
Procrustean PrintingHere's a short routine to manage printing of text with command tokens, to avoid messing up the screen when they are expanded. It just prints as many …
... side
LINE to COPY - space both sides
push af
call FETCHS
pop af
push hl
SSNEXT1:pop hl
... SSNEXT2:ld a,(de)
push af
and $7f ...Tool for saving prog op codes in one neat column?[deleted]
... NC,1C8A
28BD E5 PUSH HL
28BE E61F AND ... RST 20
28C2 E5 PUSH HL
28C3 FE28 CP ... stop address, and if hard copy is selected so that it ... there's nothing on the screen to show how far it ...
