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Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…
... bit * 8 bit is four table lookups, and add the results ... , etc.
Yes, the table runs to a page
byte table may be faster than the ... -
So shooting 360 degrees?...[I]How do I go about having - for example - a cannon in the middle of the screen, that can shoot in any direction towards the player?[/I] Well, I do…
...
You then have a table of 16-bit increments in ... arrange to shift the table values left one or ... 128 angles (thus a 256 byte table).
So ... dY values from the table, extend them or shift ... an enemy, you need another table, for ARCTAN (the opposite ... -
Porting Blues Brothers CPC->ZX...just an ideaI've just watched a video of the CPC version of the Blues Brothers games by Titus [url]http://www.youtube.com/watch?v=6DOj-Ta3Ek4...Based[/url] on th…
... compression obv... Would need another byte or two for each tile ... do, although just an extra byte per tile can give 8 ... go with more than one byte per tile - that's a ... 'd keep a separate 256 byte table that holds properties for each ... -
Porting Blues Brothers CPC->ZX...just an ideaI've just watched a video of the CPC version of the Blues Brothers games by Titus [url]http://www.youtube.com/watch?v=6DOj-Ta3Ek4...Based[/url] on th…
... go with more than one byte per tile - that's a ... 'd keep a separate 256 byte table that holds properties for each ... -
Porting Blues Brothers CPC->ZX...just an ideaI've just watched a video of the CPC version of the Blues Brothers games by Titus [url]http://www.youtube.com/watch?v=6DOj-Ta3Ek4...Based[/url] on th…
... consists of :
[byte]
[00..31] - Pixel data ... br /> you can use 256 byte table for tile description
and ... another table for action bits - 8 ... element
and morfing table - for some backround action. -
Porting Blues Brothers CPC->ZX...just an ideaI've just watched a video of the CPC version of the Blues Brothers games by Titus [url]http://www.youtube.com/watch?v=6DOj-Ta3Ek4...Based[/url] on th…
... br /> you can use 256 byte table for tile description
... per element
and morfing table - for some backround action.[/ ... [QUOTE]you can use 256 byte table for tile description[/QUOTE]
and morfing table - for some backround action[/ ... -
SpritesYes yes, I know this has been hashed over plenty of times before, but... I have knocked up a quick tiling routine which works with my back buffer co…
... (don't forget the 256 byte table)
I found during ... the player to a 3 byte buffer
copy the ... on a couple of 256 byte tables for detection methods - thus ... -
SpritesYes yes, I know this has been hashed over plenty of times before, but... I have knocked up a quick tiling routine which works with my back buffer co…
... (don't forget the 256 byte table)
I found during ... the player to a 3 byte buffer
copy the ... on a couple of 256 byte tables for detection methods - thus ... -
Random object placementI'm looking for some advice on placing objects randomly in a game. I have a routine that reads a table and prints the corresponding object: 0 prints…
The 200 byte table seems to do the trick, just seems a bit of a waste memory wise though... -
Random object placementI'm looking for some advice on placing objects randomly in a game. I have a routine that reads a table and prints the corresponding object: 0 prints…
I think the 110 byte table does the trick Jerri, I' ... collected the value on the table is set to zero but ... picking an address on the table checking if its set to ... -
Chessboard and piecesLast night for no particular reason I made a chessboard and pieces. [url=https://dl.dropbox.com/u/9498358/chessboard.szx]Chessboard[/url] [img]https…
... ]
Using a 64 byte table for game position.
[code ... -
Proportional fontsI've been doing some proportional font drawing, purely on C level at the moment, but it's orders of magnitude slower than I'd want it to be. It's sti…
... be right shifted by 2. Byte wide shifts (or RRC's ... be done through a 512 byte table. Bit expensive for one particular ... -
Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... /> Does the 64 (or 32) byte table that represents the board technically ... -
Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... "]Does the 64 (or 32) byte table that represents the board technically ... -
The I register pointing to $40–$7f causes ULA snow and a crash. Or does it?I have heard it from numerous sources, including a few members of this forum, that 128K/+2 machines crash if the I register points to a range of $40–…
... the jp that the 257-byte table points to (which is what ... -
The I register pointing to $40–$7f causes ULA snow and a crash. Or does it?I have heard it from numerous sources, including a few members of this forum, that 128K/+2 machines crash if the I register points to a range of $40–…
... the jp that the 257-byte table points to (which is what ... -
Gyroscope - reverse engineering the 3 title theme tunesHello, Does anyone know if anyone has done any disassembly work on Gyroscope? I'm particularly looking to get the three title tracks back into a …
... lc4bb: ld hl,#c58a ; 5 byte table Tune 2
jr lc4b6 ... lc4c0: ld hl,#c58f ; 5 byte table Tune 3
jr lc4b6 ... lc4c5: ld hl,#c594 ; 5 byte table Tune 4
jr lc4b6 ... ret
; copied 5 byte table for tune
lc4d6: db ... -
im looking for other games like the muncher that use double height and width graphics with colouri havent come across this type of graphics mode on the spectrum before and would like to know if there are any other games that use it.
... just a 256 byte table for the ... slower than a table,
but ... than regular 256 bytes table + code
... optimized for HOTM, table can be much smaller ... />
; ------------------
; byte mirroring
; ------------------
DUP ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... uses a shorter lookup table (one screen address per ... pixel, so uses a 48 byte table (24 rows * 2 bytes ... be aligned to a 256 byte boundary
; store ... up screen address from the table
ld a, ... inc l ; using shorter table (just the row screen addresses ... -
Mirror tableCan anyone help with a byte mirror table? e.g. so you can look up a byte of a left-facing sprite and return the correct right-facing value. There …
Can anyone help with a byte mirror table? e.g. so you can ... look up a byte of a left-facing sprite ... up a byte and returning its mirrored value from the table using ... if anyone's got a byte mirror table to hand, please point me ... -
Two Manic Miners in the top 100 games table?A while ago I was checking the top 100 games (according to WoS visitors' votes), but I couldn't help notice that there are [I]two[/I] distinct "Manic…
... second to the original Bug-Byte version. Now, since the [I ... ]s in the top 100 table?
My answer is ... -
help in byte mirroring.I need some help. What is the best way to mirror the byte? (for ex. 10010011 -> 11001001) I mean, if there is a simple way to do it (may be with OR, …
I need some help.
What is the best way to mirror the byte?
(for ex. 10010011 -> 11001001)
I mean, if there is a simple way to do it (may be with OR, AND, XOR and so on), I'll be able not to store a mirrored copys of sprite in memory.. -
Dan Dare 256 colour project many may not be aware of.I still need/want to try Vladimir's emulator. But I think many people here aren't aware of another 256 colour project, which was mentioned on C.S.S. …
... />
Or check out the mirror at [url="http://tdrh.sulevi ...
data as a palette table and you pretty much have ... -
ANNOUNCE: ZX Spectrum Game Coffee Table Bookhello peeps. I'm about half-way through writing a full-colour 250 page 8.5x5.5 inch coffee-table type book about Spectrum games from 1982 through 19…
... .5x5.5 inch
coffee-table type book about Spectrum games ... />
I've put the table of contents and some sample ... this - I obtained it to mirror the old
zxgoldenyears.co ... -
Mode 2 Tile Editor SourceA Timex Mode 2 Tile Editor incorporating a byte mirror table. The compiled version is available in the CSSCGC 2008 collection from the WoS archive. …
... 2 Tile Editor incorporating a byte mirror table. The compiled version is available ... /> ; ------------
; MIRROR TABLE
; ------------
;
; A 256 byte lookup table to mirror the bitmap ... -
Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …
... initials.
[code]; Byte Order Backbuffer - Pop And Push ... ld a, 0x3b ; high byte of vector table
ld i, a ... 16 - (attr * 16)
; last byte of the back_buffer - 16
; last byte of the screen
ld ... -
hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…
... ,6) array using a 256-byte permutation table. How do I arrange ... the entries in the permutation table to avoid any collisions? As ... all the data table entries are known in advance ... -
byte to screen eventI have another question regarding assembly routine in MMCOYZXS by Toni Baker page's 87-88 [QUOTE]21A440 LD HL,40A4 11083F LD DE,3F08 0608 LD B,08…
... the specific byte of the character from the ROM table.
Meaning of Format Byte of a TRDOS DiskDoes anybody knows the Meaning of the Format Byte (Byte 227 in Sector 8 (Sector Count from 0) in Track Zero) of a TR-DOS Disk (Real Disk of a Bet…
... the Meaning of the Format Byte
(Byte 227 in Sector 8 ... Club Newsletter No. 3:
Table for Byte 227:
22 = 80 ... = 640 sectors
2) Byte 227 (from German Beta-Disk ...
