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Manipulating attributes...Hi Folks, I have written a routine that allows a blue bar to be scrolled up and down a list to select an item. Each item in the list occupies two l…
... 1
200 LET ar1=ATTR (y,0):
LET ar2 ... =ATTR (y+1,0):
PRINT AT y,0; PAPER 1; INK ... -
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... clear screen routine to set PAPER 0 / INK 7.
... to XOR pre-shifted 8 x 8 pixel sprite on screen ...
; ------------
ld b,8 ; Height in pixels
; Pre shifted sprite definitions (8 x 8 pixels).
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... clear screen routine to set PAPER 0 / INK 7.
... to XOR pre-shifted 8 x 8 pixel sprite on screen ...
; ------------
ld b,8 ; Height in pixels
; Pre shifted sprite definitions (8 x 8 pixels).
inverting graphics using basic?just curious if it could be done by poking screen memory ? and what's the structure. (foreground / background for each char ? ) reason I ask is I'd …
... V(FN V(x,128),64),32),16)/8) OR INT (FN ... V(FN V(y,128),64),32),16)/8)=1))+(4 AND INT ... V(FN V(x,128),64),32),16),8)/4) OR INT (FN ... V(FN V(y,128),64),32),16),8)/4)=1))+(2 AND ... V(FN V(y,128),64),32),16)/8)=2)+(4 AND INT ... V(FN V(x,128),64),32),16),8),4)/2)+INT (FN ...Powering up a Speccy after long-term storage.Staying at my folks for Christmas. Feels good to be back in God's country again, even if it is -12C outside at the moment. :-o Anyway, I was plannin…
[QUOTE=Alien 8;500446]Isn't it the ... trick. Changed the Border, Paper, and Ink colours, then made a few ...Compiling Basic to MCHello, I have a lot of long Basic programs. These are mostly strategy programs, good but slow. I was thinking about how to speed them up without com…
...
10 BORDER 0: PAPER 0: INK 7: CLS: REM turn screen ... /> 30 LET c = 1: REM Ink color starting from blue
50 DRAW INK c; x2 - x1, y2 - y1 ... c = c + 1: IF c = 8 THEN LET c = 1: [b ...Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... attribute (in my case green ink, black paper) is reproduced in column ...Storing and displaying attributes...Hi Folks, I have a requirement to store and then redisplay a line of attributes from the screen. For example: 100 DIM a$(1,32) 110 LET line=10 120…
... ,0; PAPER p; INK i;"This is line ";a; PAPER 7; INK 0;" ";p ... =USR "A" TO USR "A"+8: READ V: POKE A,V ...Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
... on screen and in whichever PAPER and INK colours you wish.
;
; $0A - COLOUR ((PAPER - (0-7) * 8) + (INK 0-7))
LD B,8
PRTA_1 LD A,(HL ...Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... ld (de), 6*8 ; copies attribute = PAPER 6 to the screen ...
ld a, 39 ; ink white paper green
ld ... br /> ld (de), 6*8 ; copies attributes = PAPER 6 to screen
ld a, 8 ; ink color to white\\
Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... ]ld (de), 6*8 ; copies attribute = PAPER 6 to the screen ...
ld a, 39 ; ink white paper green
ld ... br /> ld (de), 6*8 ; copies attributes = PAPER 6 to screen
ld a, 8 ; ink color to white\\
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…
... /> ; --------------------------------------------------
; border black, paper black, ink green
do_the_redefine: xor a ...
msg_down: defm CC_AT,8,8,"Down ?",255
msg_left: ... /> msg_right: defm CC_AT,10,8,"Right ?",255
msg_fire: ...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…
...
; border black, paper black, ink green
do_the_redefine: xor a ... br /> msg_down: defm CC_AT,8,8,"Down ?",255
msg_left ... msg_right: defm CC_AT,10,8,"Right ?",255
... msg_pause: defm CC_AT,12,8,"Pause ?",255
...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 …
... ,0,128,64,64,64,64,128,0
db 7,8,20,20,16,23,8,7,128,64 ... ,160,160,32,160,64,128
db ... ,0,128,64,64,64,64,128,0
db 7,8,20,20,16,23,8,7,128,64 ... ,160,160,32,160,
Turkwel
November 2011
Development
Loading screen easter eggs[url]http://equ.in/ox/spectrum/eggs/screens.php[/url] maybe it's mentioned here before.. also it shows some credits that were uncredited before..e.g…
... /> pixelByteOffset = xAttr+((yAttr%8)*ATTR_WIDTH)+((yAttr/8)*ATTR_WIDTH*8*8);
for (accumulator = 0 ... ,iterator = 0; iterator < 8 ...Loading screen easter eggs[url]http://equ.in/ox/spectrum/eggs/screens.php[/url] maybe it's mentioned here before.. also it shows some credits that were uncredited before..e.g…
... for invisible (with same INK and PAPER) info
LF ... pixelByteOffset = xAttr+((yAttr%8)*ATTR_WIDTH)+((yAttr/8)*ATTR_WIDTH*8*8);
for (accumulator1 ... 255,iterator = 0; iterator < 8; iterator++) {
accumulator1 |= ...Loading screen easter eggs[url]http://equ.in/ox/spectrum/eggs/screens.php[/url] maybe it's mentioned here before.. also it shows some credits that were uncredited before..e.g…
... looking for invisible (with same INK and PAPER) info
LF ... pixelByteOffset = xAttr+((yAttr%8)*ATTR_WIDTH)+((yAttr/8)*ATTR_WIDTH*8*8);
if ((attribute ... 255,iterator = 0; iterator < 8; iterator++) {
accumulator1 |= buff ...BackgroundDoes anyone know how i would create a background similar to [URL=http://imageshack.us/photo/my-images/42/backgroundmockup.png/][IMG]http://img42.ima…
... ; ???
L4 LD B,8 ;paper black ink white???
LD C,32 ... not finished
LD B,8 ; paper black ink white
LD C ...BackgroundDoes anyone know how i would create a background similar to [URL=http://imageshack.us/photo/my-images/42/backgroundmockup.png/][IMG]http://img42.ima…
... /> [QUOTE]L4 LD B,8 ;paper black ink white???[/QUOTE]
No ... br /> No, 32 = Black ink, Green Paper.
[QUOTE]L1 LD ... lost[/QUOTE]
Black ink on black paper (you might want to ... ...
[QUOTE]LD B,8 ; paper black ink white[/QUOTE]
No, ...Annoying colour issues with UDGsMe again... Flush with the success of finding the latest version of BASin to play with I tried to buff the graphics of the various screen items All…
[QUOTE=mcleod_ideafix;596252]INK 9 calculates the ink of each character to be ... upon the paper colour so the contrast between ink and paper is as ... />
Funny, I understood the INK/PAPER 8 idea but I never actually ...Is there a limit to the numberof variables you can have in BASIC..... Reason I ask is I've got an idea....but using my "lowest common denominator" approach to code I fear that I'…
ATTR
a block of ... /> so a green paper square with yellow ink woukd be given the ... .
paper 4
ink 6
cls
print attr (0,0 ... line like
if attr(x,y)=38 then gosub ...Is there a limit to the numberof variables you can have in BASIC..... Reason I ask is I've got an idea....but using my "lowest common denominator" approach to code I fear that I'…
... PAPER 0: BORDER 0: CLS :
20 REM LET a1=ATTR (1 ... yplayer=5
50 PAPER 0: INK 1: PRINT AT 1,1 ... =yplayer+1
71 IF ATTR (xplayer,yplayer)=1 THEN GO ... TO 200
80 INK 2: PRINT AT xplayer,yplayer ... GO TO 60
200 INK 2: PRINT AT 10,10 ...Faster CLS...Hi Folks, Looking at the CLS command in the Spectrum ROM disassembly it seems rather complex. Does anyone know of a simpler/quicker routine that wi…
... to any atribute N*8+N, this is, PAPER = INK) before loading the ... differ from:
PAPER 0: INK 0: CLS
PaddyDATA vs PRINT and OVERjust messing about and came across this alternative way of drawing a map....now before I start mucking about with my actual program.....is there any …
... screen full of alternating paper lines where one line ... BORDER 1: PAPER 0: INK 7: CLS
110 REM BRIGHT 1: ... FOR y=3 TO 19 STEP 2: PRINT PAPER ... /> 130 REM PAPER=CHR$ 17
140 REM BRIGHT=CHR$ 19< ... 170 REM
180 REM BRIGHT 1
190 LET c ...DATA vs PRINT and OVERjust messing about and came across this alternative way of drawing a map....now before I start mucking about with my actual program.....is there any …
... 1: PAPER 0: INK 7: CLS
110 REM BRIGHT 1: ... FOR y=3 TO 19 STEP 2: PRINT PAPER ... 130 REM PAPER=CHR$ 17
140 REM BRIGHT=CHR$ 19< ... 170 REM
180 REM BRIGHT 1
190 LET c ...
10 PAPER 0: BORDER 0: BRIGHT 1: CLS : REM setup ...Routine for clearing screenI was looking for a 'nice' way of clearing a screen of graphics in Z80. After a ridiculous amount of time mucking around, this is the best and most …
... 64+128,128,64+128,64,64+128,32,64+128,16
db 64+128,8,64,127,64+128,4,64,191
db 64+128,2,64 ...Fix attribute clash in emulatorWould it be difficult to implement a feature for an emulator that "fixes" the attribute clash on the fly in games?
... to appear as 8 shades each of the PAPER and INK colours assigned ...Dimming the screen...Hi Folks, I was hoping someone on here could help me with a wee machine code routine. I have written the following example in BASIC: [CODE]100 REM…
... 63540
150 BORDER 0: PAPER 0: INK 7: CLS : PRINT AT ... 1,0; INK 7;"\* "; INK 4;"Pea"; INK 5;"Sea "; INK 7;"Software ";TAB ...
220 REM
230 BRIGHT 1: FOR y=2 TO ... 31: PRINT AT y,x; PAPER 1+INT (RND*7);" ": NEXT ...How frequent is the flash switching?Hello All, A quick question if I may be so bold :) Is there any documentation on how fast the flash is switched? I've found this but I'm not sure i…
... produces the FLASH attribute mode by toggling the INK and PAPER bits once ...
