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SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... d, a ; use 0 as counter
org ... ; recursively
dec d ; print
jr nz, po_space ; ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... br /> call po_tokens ; print token
jp ... dec a ; reduce counter
inc hl ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... /> rst print_a ; print one character
... reset
sub b ; counter
ld (scr_ct), a ... -
Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…
... ]
; Massive.ASM
; print a very long binary number ... bc,(BINsize) ;B'C'=binary counter
ld hl,BIN2040
counter
ld e,1 ;E ... -
Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…
... ]
; Massive-bit.ASM
; print a very long binary number ...
;BC=(BINsize)/3 (loop counter)
ld hl,$ffff
dec bc ;octal digit counter (within BINsize bits)
ld ... -
Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…
...
; Massive-BCD.ASM
; print a very long binary number ... /> ;BC=(BINsize)/3 (loop counter)
ld de,$ffff ;DE ... /> dec bc ;octal digit counter (within BINsize bits)
... -
How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... much text there is to print out and keep going until ... 't figure out how to print text using that font.
dec bc ; decrement counter.
ld a,b ; high ... -
UDG tricks?I always enjoyed using [URL="http://www.worldofspectrum.org/ZXBasicManual/zxmanchap14.html"]UDGs [/URL]for the 'sprites' in my games, when I coded th…
... 't know why you'd print chr$ to get the UDGs ... effect is of a rolling counter as the '0' rolls over ... -
Dock's ZX Maze gameI'm hoping to finish a simple maze game in ZX Spectrum BASIC this week, as part of the Ludumdare Retro challenge. I used to dabble in speccy basic on…
... left/right
83 PRINT AT 20,16; BRIGHT 1 ... zw=ATTR(r-1,k): PRINT z$;INK 5;x$: POKE ... -
Dock's ZX Maze gameI'm hoping to finish a simple maze game in ZX Spectrum BASIC this week, as part of the Ludumdare Retro challenge. I used to dabble in speccy basic on…
... left/right
83 PRINT AT 20,16; BRIGHT 1 ... zw=ATTR(r-1,k): PRINT z$;INK 5;x$: POKE ... -
Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …
... ,h,v,a)
to print the box. Here's a ... /> ld a,c ;save row counter
pop bc ;reset column ... /> ld c,a ;restore row counter
ex af,af' ;restore ... -
analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …
... using two bytes for each counter, so it will give ... PEEK (a+2)):
PRINT CHR$ b0;")" AND b0= ... TO 8942
8946 PRINT CHR$ b0;: LET a= ...
inc hl ;skip over counter
inc hl ; "
clear a windowed area of the screenHi everyone! Ain't been on here for donkeys, but have recently started messing around with a little game. I'm looking for ideas/opinions on the bes…
... s not possible to use PRINT AT on the 24th ... s OK but trying to PRINT AT a specific position on ... a character-based rectangle
; PRINT AT row,col;: RANDOMIZE cols ... /> dec (ix+1) ;decrement rows counter
ret z
ld ...Banked memory running slower?I've just compiled a TAP which includes bank6, it loads ok, but the routines that are paged in run slightly slower. The Z80 snapshot has no such pro…
... occurs.
So the counter routine starts running, then when ... .
Whatever that counter got to in the meantime ... when you do something like PRINT USR 32768, the register pair ... like, 'LET BC = USR 32768 : PRINT BC'.
Another trick ...Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... FOR r=7 TO 14: PRINT AT r,12;"XXXXXXXX": ... TO 0 STEP 0:
PRINT AT 7,12;: RANDOMIZE 8 ... a character-based rectangle
; PRINT AT row,col;: RANDOMIZE cols ... /> dec (ix+1) ;decrement rows counter
ret z
ld ...Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... it's an internal counter that can't be read ... external effect of the counter going over 32[/QUOTE]< ... (m>1) THEN PRINT AT 0,0;"FLASH": GO ... TO 10
40 PRINT AT 0,0;" ": GO TO ... no correlation between frames counter and ula internal counter.
3. ...Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... key to increment the offset counter.
[*]The FLASH synch offset ... LET p=z+PEEK 23672: PRINT AT 0,0; FLASH ((p ...New Game(s): Sir Ababol 2 and Sir Ababol DXHere is our own Christmas Present from Mojonia! We weren't going to release these games (at least, by the moment) but we decided just yesterday to fi…
... br /> dklp push bc ;save counter
call no_key ;avoid whizzing ... next key
call print_string ;print UP/DOWN etc
inc ... br /> ;
print_string ;rem will print in upper or lower screen ... ret z
rst 16 ;print ASCII until we get to ...z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... .
rst 16 ; print it.
ld a,( ... position.
rst 16 ; print it.
ld a,(xcoord ... coordinate.
rst 16 ; print it.
ret[/code]
print -- it keeps track ... that sets the loop counter to 10. The code ...Can anyone show a slight diagram of how pokes work in a jet set willy game for example?I know its kind of something to do with machine code and Memory addresses etc but would be nice to see a youtube video or some drawings etc ? .Many t…
... /> DJNZ loop ;decrement the row counter, and jump back to loop ... works, try modifying it to print different patterns, see if you ... can print it elsewhere on the screen ...HELP!I'm trying to replace a bit in a byte as follows, but having some sort of brain freeze trying to get it to do what I want. A=00 if bit to replace …
... ?
It is a print routine of sorts that takes ... .
a simple length counter decides how many bits to ...Scrolling loader counter in 85 T-States?Would it be possible to write a scrolling loader counter in 85 T-States? I have a custom screen load routine that loads attribute first, then the …
... pixels high. So I can print two numbers at once.
print the counter. So it ticks down ...Scrolling loader counter in 85 T-States?Would it be possible to write a scrolling loader counter in 85 T-States? I have a custom screen load routine that loads attribute first, then the …
... -states, with printing the whole counter (8x5) in one go.
print the result in two passes ...Scrolling loader counter in 85 T-States?Would it be possible to write a scrolling loader counter in 85 T-States? I have a custom screen load routine that loads attribute first, then the …
... , I realized something rather funny. Print the same digit repeatedly while ... you have it: the scrolling counter routine. This works because the ... ). So for instance if you print lines 4-7 of a ...Scrolling loader counter in 85 T-States?Would it be possible to write a scrolling loader counter in 85 T-States? I have a custom screen load routine that loads attribute first, then the …
I'm not scrolling the counter at the moment. I ... will let you position the counter whilst the screen loads, ... you to move the counter to any position on ... compressed or normal). The counter graphics are stored 0,1 ... scroll the counter, I'll need to print 6 bytes ...Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... now help to explain the print routine a bit, as in ... ;
or a ;test overlay counter
jr z,get_data ;go ... that decides which colour to print;
[code]b_w_check:< ...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…
... address: NEXT N
3 PRINT (65536*PEEK 23674+PEEK 23672 ...
LD B,12 ; loop counter
blips LD C,B ...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…
...
inc a ; Increment character counter
cp b ; Reached polygon ... FOR I=5 TO 15: PRINT AT I,5;"XXXXXXXXXXXXXXXXXXXX": NEXT ...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…
...
inc a ; Increment character counter
cp b ; Reached polygon ... FOR I=5 TO 15: PRINT AT I,7;"XXXXXXXXXXXXXXXXXXXX": NEXT ...
