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Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... '
POP AF
POP IX
POP IY
POP ...
PUSH IY
PUSH IX
PUSH AF
ld ... /> [/code]
Use of IX,IY,AF' actually slows down ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... /> PUSH IY
PUSH IX
PUSH AF
... /> PUSH IY
PUSH IX
PUSH AF
... /> PUSH IY
PUSH IX
PUSH AF
... -
I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... adding a value to a register, what happens if we exceed ... 20 to a 16 bit register with a value of 65530 ... - would the value of the register become 15 (i.e. 65530 ... -
I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... adding a value to a register, what happens if we exceed ... 20 to a 16 bit register with a value of 65530 ... - would the value of the register become 15 (i.e. 65530 ... />
The value in the register will be 15. As for ... -
I say, Woo HoooYesterday Amstrad revealed a new Spectrum with Game Controller. [url="http://www.amstrad.com/e3_games.html"]http://www.amstrad.com/e3_games.html[/url…
... online at this site. The Register were at yesterday's launch ... -
Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... /> PUSH IY
PUSH IX
PUSH AF
... /> PUSH IY
PUSH IX
PUSH AF
... /> PUSH IY
PUSH IX
PUSH AF
... -
I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... . add the value in register C to register A).
Starting ... -
I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... dealing with instructions where the register value would really be more ... bits, or half of a register pair - but you'll still ... -
Techy Z80 questions****** Question 1 ****** Take the instruction SET b, (HL). This is broken down (in machine cycles) as follows (according to Microprocessor Technolo…
I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... output, which are the final register states etc.I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... output, which are the final register states etc. [/quote]
I ...Smooth Screen ScrollingHi Everyone, Any suggestions on what is the best way to do horizontal scrolling ie. in Zynaps fashion. I am working on a routine at the moment, whi…
... to decrement a 16-bit register when we can achieve the ... decrementing an 8-bit register as the h register will only change ... if the l register is zero prior to doing ...Can't play Samurai Warrior on some emulatorsI've tried to play "Samurai Warrior" on Klive and SPIN, but I can't! To hide a sword in this game you need to press fire+back+down, but this doesn't …
Perhaps you should register Spectaculator and drop the likes of SpecEmu...Can't play Samurai Warrior on some emulatorsI've tried to play "Samurai Warrior" on Klive and SPIN, but I can't! To hide a sword in this game you need to press fire+back+down, but this doesn't …
... wrote:
Perhaps you should register Spectaculator and drop the likes ...Can't play Samurai Warrior on some emulatorsI've tried to play "Samurai Warrior" on Klive and SPIN, but I can't! To hide a sword in this game you need to press fire+back+down, but this doesn't …
... wrote:
Perhaps you should register Spectaculator and drop the likes ...Index register subtractionHi, Just wondering if there a way to perform SBC HL,BC on the IX or IY registers. I can't find an op code for it, and my assembler doesn't recognise…
Sadly, it can't be done in a single instruction as SBC HL, BC is an ED prefixed instruction and the IX/IY opcodes don't work with any ED instructions.
You'll need to swap some registers I'm afraid!
MarkoI would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... (where 'state' consists of the register contents, memory contents and other ...8 BIT WARSwhen 8bits ruled the home market Speccys, C64 and Amstrad were the big 3 fighting it out for supremecy.... but they didnt survive which as we know wa…
... I turn up there and register a membership just to argue ...RZX for Sabre WulfI was just about to send an RZX for Sabre Wulf to the RZX Archive when I noticed they don't accept Ultimate's (and other companies' who haven't given…
... RZX recording started in. Restoring register and system variable values might ...RZX for Sabre WulfI was just about to send an RZX for Sabre Wulf to the RZX Archive when I noticed they don't accept Ultimate's (and other companies' who haven't given…
... ?rg Pleumann wrote:
Restoring register and system variable values might ...How can I scroll a line of text and wrap perfectlyI know this is easy for most of you but for some reason I am messing it up. In Assembly Language I want to do the following: I have 1 line of text …
My guess is that carry flag gets corrupted when you loop. Try pushing AF before looping back to do each line, or using the alternative AF register.
DerekHow can I scroll a line of text and wrap perfectlyI know this is easy for most of you but for some reason I am messing it up. In Assembly Language I want to do the following: I have 1 line of text …
... to this I would use register pairs to do the 'scrolling ...Idea about improving EmulatorHi, I got a bright idea today how to improve such excellent emulators a bit more. Okay, disassemblers are available in nearly every one new released …
... routine that displays the instant register status, memory execution freeze address ...Idea about improving EmulatorHi, I got a bright idea today how to improve such excellent emulators a bit more. Okay, disassemblers are available in nearly every one new released …
Watch register status? Why there embedded Debugger then? Stop on some additional conditions... this feature is implemented in EmuZWin from the old days: just use trace and setup a set of conditions to stop...The Spectrum is a Piece of ShitHow can you all stand there and defend a computer that was ABSOLUTELY RUBBISH even back in 1982, compared to classics like the Atari 8-Bit, Commodore…
... you took the time to register an account and then to ...Announce: EmuZWin 2.5 Release 2.2 Post-FinalEmuZWin Version 2.5 Release 2.2 post-FINAL (16-Oct-2004): [-] A small pause added between TAP blocks while loading tape from .TAP image (otherwise s…
... ?( maybe some settings in the register )
I did try some ...
