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1k Chess (was the 924 bytes thing!)Hi, I've decided to do a major rewrite of large parts of the code for the isometric Chess thing that I've been messing with. It got to the point, …
... />
Well, for instance, let's see what happens if you ... )
sbc a
ld (de),a
inc e
djnz backup_lp0 ... /> restore:
ld e,#E0
ld c,l
restore_lp2:
ld l,c ;16b
[/code] -
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…
... /> [code]
ld de,#7102 ;E = number of consecutive sync marker ...
ld l,e
.lp2
in a,(c)
cp d ... counting the RET, as it’s unnecessary). However, SpecEmu, as we ... simplicity of v2.1—a single loop with a single padding instruction ... -
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…
Alright, here's [url=https://drive. ... halt
exx
out (c),e ;set #1FFD to the currently ... br /> nop
in a,(c) ;read the port again
A: LD A,(HL)
DEFB #77 ... before (I) and after (A) the operation, respectively.
... -
A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…
... routine
;By Ast A. Moore
;(c) 2017
... />
inject_controls
ld c,6 ;six keycodes to go ... A with E to compare
cp $ff ;if it’s FFh ( ... br /> s_shf defm "S.SHIFT"
c_shf defm "C.SHIFT"
< ... -
1k Chess (was the 924 bytes thing!)Hi, I've decided to do a major rewrite of large parts of the code for the isometric Chess thing that I've been messing with. It got to the point, …
... .com/s/z9gtfr05fvlt67k/ ... E value
ld a,h ;
add a,a ;x2
add a,a ... /> ld a,c ;C=current line< ... -
1k Chess (was the 924 bytes thing!)Hi, I've decided to do a major rewrite of large parts of the code for the isometric Chess thing that I've been messing with. It got to the point, …
... and e ;mask again 1Eh
ld c,a ;into C
add a, ... ="https://www.dropbox.com/s/e9gcggq8un8ibry/CH6377~1.tap?dl ... 0"]https://dropbox.com/s/e9gcggq8un8ibry/CH6377~1.tap ... -
Other than using attributes what other ways to detect collisions, when using char based movement?So I'm slowly working out the bits and pieces to write a game completely in assembly. I've been using attributes when writing in BASIC to detect whet…
... br />
So, let's go in with B = Y ... attributes
ld a,c ;Save X-position for later ... ld b,0
ld c,a ;X-position returns, now ...
ld a,(hl) ;Get value from attribute ... you're not using (e.g. POP IX) then ... -
ive found an attr scrolling routine but i want to remove the smaller scroller within it, etc.https://pastebin.com/K4nG3xbX also i would like to be able to change the colours and not have a shadow. http://www.worldofspectrum.org/pub/sin…
Here's the fast version, just doing a plain 8-row scroll ... , H ; FB58 54
LD E, L ; FB59 5D
INC ... charset, D =charbyte
LD A, C ; CHR$ pixel column
OR ... -
How can I make a UDG rotate?I designed a set of UDG's that can be used for making shapes or letters. Trouble is that my circle - for example - consists of 4 pieces and it would…
... ; Decrement B. If it's not zero, loop back for ... br /> OR E
LD (HL),A
LD A,C ; Load A with offset ... ; Decrement B. If it's not zero, loop back for ... -
Wildly OT: Computing Today's slagging-off of PascalIn the late '70s or early '80s (at the beginning of the home-computer era anyway, just before the dawn of the Speccy), there was a mag called [I]Comp…
... included with Turbo Pascal / Turbo C... FreePascal IDE looks similar, but ... C more usable (i.e.: you can't assign a real data to a ... (i.e.: why your program locks into a loop). It's a shame that ... trying to take a step forward, learn C but use a C++ compiler. You ... -
New Monty On The Run RemakeMorning everyone, I've just released my new remake of Monty on the run. It's available for Windows (7 upwards) and is written in Monogame and C#. …
... have a firm grounding in C# it's even easier. It is a very ... the fundamentals of coding a game i.e. loop etc. you should ... hear you found the download a bit hard to find, I ... link colour when I get a chance, thanks for the feedback ... -
Keyboard reading questionOkay, here's a weird one. I have to elaborate a bit: In the 90s I coded quite a lot of stuff, but I haven't done so in 20 years. There was a hidde…
... the top three bits. It’s different on different machines, ... ignore the top three bits. E.g.:
[ ... keys 1-5
in a,(c) ;read contents of port< ... i][/url]. Unfortunately, there’s nothing you can do about ... computer can’t detect Q, A, Z, P, L, and ... -
Proportional-width fontsFor reasons that are still not quite clear to me (because I’ve always loved typography and design,) I never bothered to write a proportional-font rou…
Okay, here’s the source ... area)
ld a,e ;convert column into pixel ... code
add a,a ;into char bitmap addr ... a,(de) ;screen into A
or c ;merge with C
ld (de),a ... ;back on screen
inc e ... -
Kempston Mouse DriverHi Folks, Does anyone know the email of Chris Cowley who wrote the Kempston Mouse Driver in the WOS Archive? Many thanks Paddy
...
ld E,(IX)
LD A,C ; Load A with offset
s not zero, loop back for ... br /> OR E
LD (HL),A
LD A,C ; Load A with offset ... ; Decrement B. If it's not zero, loop back for ... -
Printing text, part MMXIIXI'm pretty sure there's been a zillion threads about this already, and I don't think it's the first one by myself either, but here goes. Proportiona…
... br /> ; -5(ix) -6(ix) = s 3 -> ix
; -7 ... a,c
add a, 6 (ix) ; + aX
ld l, a
ld a ... drawing it because it's empty
or a, a
jr Z ... ; next char
ld a,(ix)
ld e,a
; if zero ... -
Printing text, part MMXIIXI'm pretty sure there's been a zillion threads about this already, and I don't think it's the first one by myself either, but here goes. Proportiona…
... rewritten the whole thing from a different algorithm point of view ... the new one started from a C version that was already faster ... same test string. And there's still things to try..[/quote ... looks fairly content as a 'doing w/e the fk I want ... -
Proportional-width fontsFor reasons that are still not quite clear to me (because I’ve always loved typography and design,) I never bothered to write a proportional-font rou…
... later, upon Jari’s request in [url=" ... br />
It’s much, much faster now and ... attr area)
ld a,e ;convert column into pixel x ... /> ld c,a ;bitmap byte into C
xor a ;clear A ("tail"), ... back one cell
ld a,c
or (hl)
Drawing LinesHas anyone got any experience of coding a Bresenham line drawing algorithm on the Speccy? I've had a go and I find the algorithm has quite a few s…
And here's one for a Bresenham circle as well
< ... A,(DBCXVAR)
LD E,A
LD A,(DBCOORDS)
ADD A,E
LD C,A ...
LD A,(DBCYVAR)
LD E,A ...Tory Leadership ContestCould not help it had to mention it, I know it won't interest everyone. Don't want to open a can of worms. But its chit chat, so be nice to each othe…
... completely honest while there's talk of expanding our ... cars as unless people's final destination *is* ... I.C.E (is a jet engine still technically an I.C.E?) ... whatever it is, that's just revenue gathering, its ... through without a deal now honestly. MP's might try ...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…
... /> The easiest is a string array. E.g. like a$()
You use ... last element (number of character(s)), then BASIC will print all ... /> 20 FOR c=1 TO 5
30 PRINT “*”;a$(c);”*”
40 ... NEXT c
[/code]
Filing system structureI know there are Cabinet files on Windows, but I was wondering why don't the Windows developers adopt a new type of file structure which mimics tradi…
... a cabinet, and draw as a same concept as a folder. Just as a ... contain folders.
A folder called Cabinet1 could contain ... i.e. a C drive was shown as a cabinet. Digital Research's GEM desktop ... , as used in the Atari ST, had a ...I'm such a messPeople may notice i haven't been posting lately, the reason is i'm not very good at the moment. I'm an emotional mess. I've been best friends with …
... night. I was invited a girl pal's house, just the ... .
I knew a girl about 20 years back ... than beer, and maybe a bit of weed from time ... sort us out with a couple of E's? All I literally said ... like "Hang on? What a total pair of c*nts!" :))
< ...What to write / programme?I've been trying to get back some motivation to write something in machine code for the Spectrum. I don't feel I am organised enough to write somethi…
... down, rather than 24 UDG's. The screen table just holds ... /> ld a,(hl)
ld e,a
inc hl
ld a,(hl ... d,a
ld a,e
add a,32
ld e,a
dec c ...
