-
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... /> LD D,0
ADD IX,DE
... increase and store
ADD A,(IX+6)
... FA0Ah
ADD A,(HL) ; Add the contents of HL ... 96, 32, 32, 16, 16
DEFB 16, 16, 32, 32, 32, 64,128 ... -
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... different gfx)
ADD HL,DE ; Add DE, so we ... br />
ADD A,(HL) ; Add the contents of HL ... br />
ADD A,(HL) ; Add the contents of HL ... 96, 32, 32, 16, 16
DEFB 16, 16, 32, 32, 32, 64, ... -
Back 2 Skool - the waterpistolHow do you fill the middle cup near the stairs leading to the boys' classrooms? I've collected the water pistol, and press G to fire the pistol. The …
... a stair.
(EDIT ADD.) Ah, and note that unlike ... on 2004-09-20 05:32 ] -
Fast division in machine codeHi Does anyone know what is the fastest way to divide a 16 bit number by 24 in machine code. Derek [ This Message was edited by: dmsmith on 2004-0…
... binary or 1/24 = 1/32 + 1/128 + 1/512 + 1 ... d
rr e
add hl,de
ret ... N+1 terms of 1/32+1/128+1/512+....
32*4^N))*SUM(i=1 ... =0 (no fragments), error is 32. If N=1, error is ... -
The incredible shrinking screendumpIn this topic I stated that I would be impressed if the screendump could be smaller than 37 bytes. [url="http://www.worldofspectrum.org/forums/viewt…
...
LD A,255
ADD A,D
JR C ... ,PR
ADD A,B
JR NC ... /> TABLE DEFB 13,27,"J",32
DEFB 27,"K",192 ... -
Can Anyone explain sprites in Jet Pac/Atic Atac etcJet Pac was 16k, and yet the sprites were impressively fast. I notice they had a slight flicker at times, but were notmally pretty flicker free. W…
... /> ld a, l
sub 32
7750 djnz 41
ld a, l
sub 32
ld l, a
ret nz
sub 32
ld l, a
and h
add a, 8
ld h ... -
Can Anyone explain sprites in Jet Pac/Atic Atac etcJet Pac was 16k, and yet the sprites were impressively fast. I notice they had a slight flicker at times, but were notmally pretty flicker free. W…
...
ld a, (SPRY2)
add a,2 ;
and 127 ...
ld a, (SPRY5)
add a,2 ;
and 127 ...
ld a, (SPRX5)
add a,2
ld (SPRX5 ...
ld a, (SPRX7)
add a,2
ld (SPRX7 ... ld a,l
add a,32
ld l,a
Why did you choose your nick?Referencing the end (currently, thoough if more than a month or so have gone by it may by now be the middle) of [url="http://www.worldofspectrum.org/…
... /> On 2004-10-16 02:32, Dunny wrote:
Hmm, just ... a lot more I can add at the moment, but if ...Bill GatesI'd just like to wish Bill Gates a really enjoyable 49th birthday, what do you buy the guy who has absolutely everything?? A ZX Spectrum!!!
... /> On 2004-10-31 14:32, psj3809 wrote:
These forums ... /> Someone in the 'worst speccy add on' wrote about punching Gordon ...Help required to calculate screen addressesDoes anyone have some code that calculates the screen address one pixel below the given address ? Is it best to use a lookup table ? Any examples of …
Help required to calculate screen addressesDoes anyone have some code that calculates the screen address one pixel below the given address ? Is it best to use a lookup table ? Any examples of …
spectrum disks for saleI have 296 titles on around 200 disks for sale. Offering them on here first before ebay gets them. Contact me at [email="cluncastle@hotmail.com"]clun…
... /> On 2004-12-06 19:32, The Master wrote:
all ... are on WoS I might add)?
Don't worry, I ...Spectrum programmingI have a Spectrum+ at home. I tried to write some programs in BASIC (IIRC i wrote a breakout clone in which you had to hit those spider-like characte…
... ]
Starts at 4000h, 32 bytes per line of bitmap ... characters), rather than having to add 20h to HL. This produces ...Help needed to speed up functionCan anyone help me to re-factor this code snippet. The "MAP" section holds information about which tiles go where on the screen (handled by another f…
... br /> LD DE,COLOUR
ADD A,E
LD E ... br /> LD A,31
ADD A,L
LD L ...
LD A,32
ADD A,L
LD L ...Help needed to speed up functionCan anyone help me to re-factor this code snippet. The "MAP" section holds information about which tiles go where on the screen (handled by another f…
... br /> LD DE,COLOUR
ADD A,E
LD E ... br /> LD A,31
ADD A,L
LD L ...
LD A,32
ADD A,L
LD L ...Help needed to speed up functionCan anyone help me to re-factor this code snippet. The "MAP" section holds information about which tiles go where on the screen (handled by another f…
... br /> LD DE,COLOUR
ADD A,E
LD E ... br /> LD A,31
ADD A,L
LD L ...
LD A,32
ADD A,L
LD L ...Help needed to speed up functionCan anyone help me to re-factor this code snippet. The "MAP" section holds information about which tiles go where on the screen (handled by another f…
... )
LD DE,COLOUR
ADD A,E
LD E ... '
LD A,31
ADD A,L
LD L ... at all
LD DE,32
ADD HL,DE
Help needed to speed up functionCan anyone help me to re-factor this code snippet. The "MAP" section holds information about which tiles go where on the screen (handled by another f…
... '
LD A,31
ADD A,L
LD L ...
LD DE,32
ADD HL,DE
DEC ...Help needed to speed up functionCan anyone help me to re-factor this code snippet. The "MAP" section holds information about which tiles go where on the screen (handled by another f…
... '
LD A,31
ADD A,L
LD L ...
LD DE,32
ADD HL,DE
JP ...Help needed to speed up functionCan anyone help me to re-factor this code snippet. The "MAP" section holds information about which tiles go where on the screen (handled by another f…
... '
LD A,31
ADD A,L
LD L ...
LD DE,32
ADD HL,DE
JP ...Anyone help re-factoring a tile functionI had some excellent feedback for re-factoring my function that displays the colour for my screen tiles. Can anyone offer some help to improve the fu…
Anyone help re-factoring a tile functionI had some excellent feedback for re-factoring my function that displays the colour for my screen tiles. Can anyone offer some help to improve the fu…
Anyone help re-factoring a tile functionI had some excellent feedback for re-factoring my function that displays the colour for my screen tiles. Can anyone offer some help to improve the fu…
The incredible shrinking screendumpIn this topic I stated that I would be impressed if the screendump could be smaller than 37 bytes. [url="http://www.worldofspectrum.org/forums/viewt…
... /> ld a,255
add a,d
jr c ... ,print
add a,b
jr nc ... /> ld a,255
add a,d
jr c ... ,print
add a,b
jr nc ... /> jr c,print
add a,b
jr nc ... /> jr c,print
add a,b
call #22b0 ...Anyone help re-factoring a tile functionI had some excellent feedback for re-factoring my function that displays the colour for my screen tiles. Can anyone offer some help to improve the fu…
ADCI'm a little confused about how the Z80 manages the ADC instruction. I'm assuming two ADD instructions are performed (am I wrong?!) I can think of 3 …
... in a z80 8-bit add instruction), you would have ... a bit sloppy (I assumed 32 bit ints -- bad AA).
add carry to one operand. Save ... overflow, then surely when you add two numbers+1, you'll ... and overflow: If you add a list of 2's ...New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…
This is what I've compiled so far:
[quote]Resources
=========
* Make all caps
---------------
You can turn CAPS LOCK on or off using a simple poke to 23658:
POKE 23658,8: REM CAPS ON
..."You, sir, are a buffoon" international extravaganzaIt's been quite a long time since this sentence was last read here on the WoS forum. I think it's the time to take it back from the past, now with an…
... , 105, 114, 44, 32, 97, 114, 101, 32, 97, 32, 98, 117, 102 ... , 102, 111, 111, 110
_________________
Add ...Game endings..which are your best / worst ones?I'm not sure how valid this is on a spectrum site considering the memory capacity of the machine,but were there any games out there with any good gam…
... /> Doo and a never-released add-on cassette of more boxers ... />
[B]1942[/B] ... (After 32 virtually identical and very tedious ...
