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ANNOUNCE: JSW64: Flash Manic MinerI am delighted to announce the gamma-release of [b][i]JSW64: Flash Manic Miner[/i][/b], which is available as a free download from [url]http://geocit…
... removed several Water-cells to make them pixel-perfect.
... changes between the Bug-Byte and Software Projects editions ... Projects edition to a sprite that resembles the Bug-Byte logo ... thresher of the Bug-Byte edition to the impossible triangle of ... -
Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …
... does a preliminary test to determine if the machine ... $00 and then $FF to all addresses, so testing ... screen RAM pixel area would be visible to the unaided ... of the lowest faulty byte found and does a ... a popular emulator, modified to simulate random faulty RAM.< ... -
how to reflect a byte's bit-pattern in assembly?I'm trying to use 16 pixel-wide graphics which are symmetrical around the vertical, i.e. if the left byte is 01001110 the right byte will be 01110010…
... I'm trying to use 16 pixel-wide graphics ... the left byte is 01001110 the right byte will be ... 01110010. Is there a fast way in assembly to ... generate the right byte given the left byte? ... most
"print-graphic-to-screen" routines. (And ... -
MultichromeIt turns out that multichrome, and other screen modes, are emulated in Fuse and Eightyone via ZX Spectrum SE emulation (which is similar to the TC214…
... . However, both screens have per byte attributes, rather than the usual ... all that is necessary is to switch which screen is displayed ... 128. Using a technique similar to how we would show raster ... line basis. The pixel data itself wouldn't need to change. Mister ... -
1K Minigame : 3D RacerLast year I started to code a 3D Racer in 1K. The print of the road was however quite flickery so I put it away to pick it up this week again. I deve…
... I would make more tracks to choose from.
[ ... br />
[*]Use attributes to colour the sky and the ... will make this a pixel or byte shift.
Contrast ... at a new line to use other attributes. Main ... task was to make a perfect display of ... -
Successor to the SpeccyBased on the rambling on the other thread it would be interesting to see what people felt was the 'spiritual' successor to the speccy. Amiga here....
... and videos on YouTube) trying to 'prove' the Amiga was ... With just a minor modification to the hardware (as was ... it could have had pixel perfect scrolling in any ... the screen was fixed to 256 byte boundaries and the ... nobody really knew how to do those sorts of ... -
Successor to the SpeccyBased on the rambling on the other thread it would be interesting to see what people felt was the 'spiritual' successor to the speccy. Amiga here....
... />
You could write to the interleved screen data on ... Not being able to manipulate the low-byte of the screen pointer ... demo crews figured out how to manipulate the start address ... the screen address per byte, you could manage pixel-scrolls vertically (on ... -
Image to ZXSpec 1.0Hi, I've written a piece of software (still not finished) that outputs any kind of image onto a Spectrum having being converted on a PC. It takes a…
... give an example of how to do this?
Thanks ... ***
10 for a=0 to 255
15 poke 23760 ...
30 for a=0 to 255
40 print 23760 ... can even store 8 pixel in one byte, but the decoding is ... -
Image to ZXSpec 1.0Hi, I've written a piece of software (still not finished) that outputs any kind of image onto a Spectrum having being converted on a PC. It takes a…
... br /> 10 for a=0 to 255
15 poke 23760 ... br /> 30 for a=0 to 255
40 print ... can even store 8 pixel in one byte, but the decoding is ... need 45056 pixel coordinates. You've mentioned it has to be ... to define characters to use in the REM made up of 8x8 pixel ... -
DATA BIN - How to read the contentOkay I hit a snag with my Image to ZX Spec program that the plot/draw command eats too much memory. So I want to use DATA BIN to insert converted jp…
... etc, I just need to encode per pixel RGB information from a ... 've no idea how to convert this to the Spectrum graphics memory ... are two parts, one is pixel information - 6144 bytes long (32bytes ... is simple 32x24 bytes, each byte holds paper (empty pixels) and ... -
DATA BIN - How to read the contentOkay I hit a snag with my Image to ZX Spec program that the plot/draw command eats too much memory. So I want to use DATA BIN to insert converted jp…
... will post link to some faq to let you understand ... are two parts, one is pixel information - 6144 bytes long ... simple 32x24 bytes, each byte holds paper (empty pixels) ... data prepared, you need to embed it into file. ... are tools around to convert BIN to TAP. Check it ... -
DATA BIN - How to read the contentOkay I hit a snag with my Image to ZX Spec program that the plot/draw command eats too much memory. So I want to use DATA BIN to insert converted jp…
... then extract each binary byte and convert to decimal but that program ... I to assume your raw input data will be 256x192 pixel graphic ... with 3 bytes per pixel (R/G ... -
Russian Translations...As i have once again been reminded (by the "Homebrew games" thread), there are some funky looking Russian games that I can't play due to not understa…
... ; A routine to draw bitmaps of 6-pixel rows in height ... of first (top left) byte
; HL=Address ... of first byte of bitmap data stored a ... of 6-row columns (6-byte chunks)
; Data ...
print_6x6_inner
; Get byte of data
LD A ... -
Tips on optimizing some newbie assembly routinesI'm starting to learn some assembly language. The best way to learn is to actually code something you are going to use, so I'm creating a very simple…
... store them as the first byte of data of all ... 256 characters, then the second byte of all 256 characters, ... load H with the high-byte of the address and ... each character as a ninth byte, instead of mapping the ... a loop just to copy the 8 bytes of pixel data, as ... -
PitPatI am coding the digital version of PIT-PAT [IMG]http://www.berg-en-dal.be/images/thumb/pitpat_spelen_2_kleur.jpg[/IMG] In fact it is golf on a tabl…
... need an 8 pixel border for the cue to rotate in?)
Tried to code up the defb's ... or X the next byte. If you need to draw a long ... value 1. Then the next byte is read as a DRAW ... /> You end a level with byte 255
On every level ... -
I just picked up a free Atari 520stJust got a free 520ST, (no cables or leads) and a small box load of games. :? dunno what to do with it, but it was being thrown out, so I grabbed it…
... d probably only need 8-byte resolution otherwise you'd be ... a particular line aligned to any given 8-byte block in the ... in pixel increments, and a 16 pixel horizontal scroll.
To ... demos which use 16 to get single pixel horizontal scrolling but that ... -
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…
... start with Helge's 57 byte routine.
I mis the ... is nothing but a 'GOTO to MC' or 'CALL from Basic ... dump.
You dont seem to care about the start value ... in the middle of the 'pixel address' routine from address 22aah ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... always two byte fetches to draw 8 pixels -- one from the 'pixel' area ... mode, the second byte fetched is also treated as pixel data. So ... two bytes fetched to specify four colours for each pixel. This would ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... ULA is timed to make two byte fetches prior to drawing each horizontal ... 8 pixels. That's one from the pixel ... attr/pixel bytes from one 8k block (note the change in byte ... fetch order) while at the same time thje pixel data ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... ULA is timed to make two byte fetches prior to drawing each horizontal ... 8 pixels. That's one from the pixel ... attr/pixel bytes from one 8k block (note the change in byte ... fetch order) while at the same time thje pixel data ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... 32x192 mode uses the second byte as attribute as in ... but instead of mapping pixel addresses redundantly to attribute addresses (so ... ) we map each pixel address uniquely to a second display file ... adding a constant offset to the pixel address. This was what ... -
Memory concerns with z88dkI've retaken my old spectrum project and sadly I've reached a dead end very fast. I'll try to explain my worst problem in a few lines. I'm not a vet…
... I'm used to memory management to be transparent to the programmer and ... /> 54 ; d1f7 - d1fe SP1.LIB pixel buffer
55 ; d1ed - d1f6 ... (0xd000, 0xd1, 257); // initialize 257-byte im2 vector table with all ... -
What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…
... ending with a byte 0x00 to say it's ... a, (hl) ; fetch char to print
and a ; is ...
inc hl ; next byte
jr .loop
... br /> inc hl ; next byte
jr loop
... there's one white pixel in the top right ... -
Fastest fill m.c. routine ever?What is the fastest fill routine you've ever seen? Is there a listing somewhere? Most games and adventures that use fill routines were considered slo…
... the machine would crash due to lack of memory.
... the fill is done byte at a time its memory ... less than the previous two pixel at a time fillers. ... It was safe to remove the restricting circle at ... difficult would it be to replace the flood routines ... -
Character scrollingOk, first I'd like to say that I'm not looking for a complete routine (but that might help) because I am hoping to write it myself and learn a bit mo…
If you are doing pixel scrolling, you might find ... bytes of every byte value rolled right 1 to 7 times, ... tbl_roll).
To get a value shifted right ... above for the other side to mask.
... br /> inc hl ; point to next data address
... -
shifting spriteshi. have anyone experience with shifting sprites by table ? some neat tricks ? i don't want to see complete code (really don't want, it trashes thr…
... than 1 pixel a frame, you are going to eventually reach ... quicker. Sprites moving 1 pixel a frame are gonna take ... bytes of data for all byte values shifted right (and ... and you either need to complement the right/left ... shifting data 1 pixel a frame of course. -
shifting spriteshi. have anyone experience with shifting sprites by table ? some neat tricks ? i don't want to see complete code (really don't want, it trashes thr…
... more than 1 pixel a frame, you are going to eventually reach ... quicker. Sprites moving 1 pixel a frame are gonna take ... way like
1) get byte A
2) get ... A now
3) get byte B
4) get ... bytes of data for all byte values shifted right (and left ... -
shifting spriteshi. have anyone experience with shifting sprites by table ? some neat tricks ? i don't want to see complete code (really don't want, it trashes thr…
... common case then. I seem to remember in Streets of Rage ... have? If you have enough to preshift all the enemies for ... is pretty straightforward but fiddly to write (and do the compressor ... a pixel level rather than a byte level) is even easier to do ...
