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Horizontal scrollDoes anyone know how to do a 2 or 4 pixel left or right horizontal scroll of the spectrum screen. I can make a 1 one pixel scroll with: ... rl (hl…
... far slower than shifting a register repeatedly. -
Horizontal scrollDoes anyone know how to do a 2 or 4 pixel left or right horizontal scroll of the spectrum screen. I can make a 1 one pixel scroll with: ... rl (hl…
... (eg POP HL, DE, BC, IX, IY, BC',DE',HL' and ... -
Horizontal scrollDoes anyone know how to do a 2 or 4 pixel left or right horizontal scroll of the spectrum screen. I can make a 1 one pixel scroll with: ... rl (hl…
... here by loading into a register first.
rl(hl ... -
Anyone familiar with ZEXALLZEXALL is a Z80 exerciser, and there's a build for the Spectrum. But oddly, it doesn't actually work on any of the emulators that I've tried. Exactly…
Also, you will notice that all (all that I checked anyway) of the flag masks are set to 0xFF, so the 3/5 bits of the F register should be checked... ;)
[ This Message was edited by: thehive on 2003-04-02 16:35 ] -
Spectrum v Amiga : The Final starts.The final has begun, just in case you didn't know. The old Speccy is getting a bit of a kicking at the moment, so get those votes in!
... but you will need to register...have a look for an ... -
Looking for a printerDoes anyone know where the best place is to buy a printer for the spectrum is? Also which is the best model to have? I'm learning to program on my …
... />
You will need to register with ebay to be able ... -
My HD died the other day......it's been re-formatted and windows etc replaced but my entire collection of Speccy games went with it. So, offer up your sympathy and remind me *…
... type sound and wouldn't register but I always managed to ... -
My HD died the other day......it's been re-formatted and windows etc replaced but my entire collection of Speccy games went with it. So, offer up your sympathy and remind me *…
... type sound and wouldn't register but I always managed to ... -
TZX compatibility issuesI seem to have a problem with using TZX files on different emulators. Specifically, files Saved As TZX from emulator. I better explain: I have a fe…
... tape a counter in a register is typically reset to a ... -
new emulatorHi All. If you wish you can download/test/link to/betatest etc. my new emulator EmuZWin 2.0. It emulates S48 and S128 and works under all Windows 9x…
... when you click on a register pair the memory windows jumps ... -
1000+ members on WoS!!!We are finally throught the magic number of 1000! There are now officially over 1000 registerd members on WoS! Is this great or wot?!! 1000 Specchums…
if its anything like LEMON, then there are probably more than a few people using multi-identites. Also some people register then don't post at all, so it might be worth checking through and deleting users who havent posted beyond a certain date. -
Finding the length of loaded Bytes:Is there a way from BASIC of finding out how big a block of bytes loaded from tape was? i.e. - if you do LOAD""CODE and load in a lump of bytes, ca…
... as well.
LD IX,STARTADDRESS
LD DE,LENGTH ... like this
LD IX,START
LD DE.LENGTH ... -
1000+ members on WoS!!!We are finally throught the magic number of 1000! There are now officially over 1000 registerd members on WoS! Is this great or wot?!! 1000 Specchums…
How do I avoid BASIC becoming corrupted on returning from a M/C routine?I'm having trouble with my BASIC program becoming corrupted on returning from a m/c routine which sets all the registers (including the shadow regist…
... preserve the alternate
HL register which contains the address of ...How do I avoid BASIC becoming corrupted on returning from a M/C routine?I'm having trouble with my BASIC program becoming corrupted on returning from a m/c routine which sets all the registers (including the shadow regist…
... seems to work. Exactly which register is the culprit I haven ...Speccy machine code info where is it?Recently I've been trying to learn Z80 and I've managed to make limited progress (some of my routines even compile now!) but I seem to be having trou…
... put it in the BC register pair. This code does the ...Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…
... base of shifting table
; ix is screen area
; sp ... /> ld a,(hl)
and (ix+0)
pop l
ld (ix+0),a
inc ix
but ...Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…
... base of shifting table
; ix is screen area
; sp ... /> ld a,(hl)
and (ix+0)
pop l
ld (ix+0),a
inc ix
but ...Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…
... a,(hl)
and (ix+0)
pop l< ... hl)
ld (ix+0),a
inc ix
and (ix+0)
ld l, ... hl)
ld (ix+0),a
inc ix
ix' and use 'and (ix+n)' and 'ld (ix+n), ...Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... activated by setting the I register below 0x80 and above 0x3f ... whether or not the I register is in that range with ...Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... are taken with the I register in the correct range.
register in it's music playback ... if you point the I register to a contended page at ...Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... if you point the I register to a contended page at ...Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
[quote]
On 2003-08-08 00:18, needlej wrote:
(Woody - I couldn't get SPIN to reproduce this even with 'emulate ULA snow' turned on?)
[/quote]
GFX.SnowEffect := (Registers.I >= 64) and (Registers.IIs spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... the effect when the I register pointed to any contended page ...Which emulator and assembler?Hi, I am looking to learn z80 assembly language and I feel the best option is a spectrum emulator and an assembler. Can anybody recommend the best …
... was for testing the R register behaviour during the interrupt acknowledge ...Anyone for a hacking challenge ?I have to get the DSK version of Tomahawk to work. It uses the well-known Digital Integration "SECURITY CODE" lock just like in Bobsled, ATF, etc. Th…
... will be in the D register above and will be ANDed ...Anyone for a hacking challenge ?I have to get the DSK version of Tomahawk to work. It uses the well-known Digital Integration "SECURITY CODE" lock just like in Bobsled, ATF, etc. Th…
Here's the Lenslok proggy I chose...
It's TT RACER but I'd imagine the following could be applied to all Lenslok games...
=====================
TT RACER AND LENSLOK
=====================
Ok, So the ...
