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How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... 6, the counter is wired up such that when bit 5 ... from 256 bytes away in memory compared to the first byte of ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... preachy. It certainly ended up much larger than I intended ... , big programs are broken up into units of header file ... program. Things like graphics commands, sprite commands, commands for reading the ... a single byte char, a 2-byte integer, a 4-byte long. Does ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... operator (rotate right source byte by one bit before copying ... I will try to finish up the 'intro' tonight. I ... to do with sprite animations (walking left, up, down) and ... but the stuff coming up you will have much more ... had to fix the byte counter as it wasn' ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... to print numbers that line up in columns in the status ... program again (don't load up a fresh copy!) with ... "s" to print. First up is to look for special ... has each byte in a character square separated by 256 (0x0100 in ... h (which you can look up in the wiki) and ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... code that is driving me up the walls.
... />
ld hl,(23*256)
call zx_cyx2saddr_callee + ASMDISP_ZX_CYX2SADDR_CALLEE
Create symbol table file.
Link/relocate ... It also keeps on coming up with this warning.
... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... This in itself should speed up the scrolly somewhat if ... nested.
A table lookup would be the fastest ... little savings that add up in a large program. ... before 50000 cycles are up (which is easy given ... to eliminate the 260+ byte buffer required by the ... -
Help hacking Split PersonalitiesI`ve been hacking away at Split Personalities for the purpose of putting new screens and graphics (items). The current screen is at 41187 and is 160…
... Just quickly on the first table (first post) you found ... parts. First is the byte data followed by attributes. ... screen 1 we have screen byte data from #5b00-#6120 ... control codes for the screen byte data.
... br /> Note: all adds up to 20 bytes (5+8 ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... get rid of the 240+ byte buffer. I would like to ... 'll have time to post up the events code before tomorrow ... . Sprites can walk left and up and down and there are ... to use when drawing the sprite. If you'd like to ... -
Using a multiface to exit to BasicBack in the days I was always fascinated with the idea of getting access to BASIC listings inside a program or game. I was able to work a way around …
... example, you might end up with what seems to be ... call, if the five-byte numeric representation is POKEd correctly ... Speccy fiddles with 5-byte numbers is depicted in ... 0 and 65535 (two-byte numbers), the representation is ... [/B] ([B]3[/B] * 256 + [B]232[/B] = 1000 ... -
Using a multiface to exit to BasicBack in the days I was always fascinated with the idea of getting access to BASIC listings inside a program or game. I was able to work a way around …
... and browse the Spectrum ASCII table in the manual, you'll ... (ANY variable), you might end up crippling the assembler code you ... and then PEEK it a-byte-at-a-time).[/QUOTE]
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... to handle all display and sprite responsibilities. Using SP1 means ... way because SP1's sprite definitions are also column ... ...
[/code]
First up a few variables are initialized ... copies the corresponding 72 byte graphic definition for the ...Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... *joyfunc;
// player sprite
uchar state; // ... STATE_* for sprite animation
struct sp1_ss *sprite;
... return value a single byte that indicates up, down, left, ...Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... have been trying to align all the facts presented ... , including the last attribute byte being read from port ... unhappy about T1 picking up one contention pattern, and ... T2,T3 etc picking up another because you could ... end up with a single cycle ...Digitized videos and sounds projectAfter starting this thread [url]http://www.worldofspectrum.org/forums/showthread.php?t=14420[/url] I decided to start converting parts of clips and…
... ). I was planed a 6-Byte per frame Audio conversion, but ... , Screen (with optiona compression) r Sprite (with optional mask). All you ... Option to import BMP with up to 1280x1024 pixel and convert ...Improved emulator page?I've noticed that the emulator page hasn't changed since I first visited a few years ago. Of course, it works fine but I was wondering if there was a…
... , whereas the original now takes up one line only.
< ... for your proposal:
- align all the text to the ... of the tablerow
- define table collumns in percentages so that ... for the table rows to improve readability
- align the table to the ...Your help needed![FONT=Arial]there are [URL="http://www.worldofspectrum.org/neededscreens.html"]a number of titles[/URL] (146) that still lack an in-game scre…
... , I'll leave the choice up to you Martijn as to ... Expansion Tape
Saga Sprites Table
Basic 64
Saga Sprites Table:-
I have simply captured ... of the program is a "Sprite Table", I can't find anything ...splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…
... background UDG and all sprite characters occupying each ... /> SPNullSprPtr / SPCompNullSprPtr are special sprite character definitions that can be ... /> SPkeytranstbl is a lookup table used to convert keypresses to ...
In splib2 open up the file "sp.lst" ...splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…
... I had everything pretty messed up. I installed the latest version ... at all, then?)
2.- Sprite definitions are in ROM.
table and the tile addresses).
splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…
... location is $f000 with the table actually occupying addresses $f200-$ ... br />
[quote]
2.- Sprite definitions are in ROM.
256 characters in the game ... sp_Initialize() call) to uncompress the table data from ROM into SPTileArray ...Development IDE collaborationI was wondering if other people making development IDE's (MetalBrain, LCD , Claus Jahn and Carlinski as far as I know) would be interested in combini…
... me TommyGun has the best sprite editor, period. I can have ... aren't consecutive - each byte is 256 apart for fast lookup - which ... 't support it. Even the sprite-editor isn't perfect as ...help sought with first foray into machine code - pixel scrolldownI have started to code my first machine code program, a simple roadrace game. I've based it around the pixel scrolldown routine in 40 Best Machine Co…
... 7 ;next line up is 7 lots of 256 up the display file ...
ld h,a ;point there(byte ... 7 ;next line up is 7 lots of 256 up the display file ...
ld d,a ;point there(byte ...Dangerous Z80 Assembly CommandHave been reading Toni Bakers' "Mastering MC On Ya Speccy" book and came across the list of Z80 commands in the dictionary section. Page 102 "[b]IM…
... interrupting device supplies a single-byte instruction to execute during the ... interrupting device supplies an identifier byte during the interrupt acknowledge that ... look up the interrupt service routine address CALLed from a table of ...Dangerous Z80 Assembly CommandHave been reading Toni Bakers' "Mastering MC On Ya Speccy" book and came across the list of Z80 commands in the dictionary section. Page 102 "[b]IM…
... /c routines, the 257 byte interrupt vector table and music data reside ... routines I have for setting up the IM 2 handler, and ...Toshiba t6600c - 1993 laptop[url=www.toshiba-europe.com/computers/products/notebooks/t6600c/index.shtm]T6600C literature.[/url] My neighbours has been given one for their son t…
... mother said it occasionally locks up and she "fixes" it by ... />
An 8MB laptop with 256 colour display is very low ... by knocking it off the table? How cliched is that?).
Spectrum Ethernet update...in which a toastrack 128K machine prods a machine outside of my LAN for the first time. [url]http://spectrum.alioth.net/doc/index.php/Current_eve…
... good idea).
[*]Get the byte at the current return address ... ERR_NR and CH_ADD to flag up the error condition appropriately, then ... stuff, also including a nice table-based syntax checker (so it ...Collision Detection in SP1Hi, Does anyone have a well-documented example of using collision detection in spritelib. I've search WoS and Z88DK forums but no joy. Something wi…
... uchar width; // +2 width of sprite in tiles
uchar height ... 1 for 2-byte graphical definition else 1-byte, bits 2:0 ... last column of the sprite. If your sprite graphic is 2 ... can be rotated right by up to 2 pixels and ...Disappearing/appearing effectI remember doing a small routine in BASIC which could be used to cover the attributes section randomly, until all 704 characters were filled with the…
... /> Well I look up the taps in a table like all the ...Wrong File Type, 0:1Ive gone thru an entire transform box full (20) of cartridges containing spectrum games that i wrestled off bay last year, yet not a single one will …
... /> Unfortunately as the SNA takes up the whole 48K RAM in ... BASIC loader, a tiny SCREEN$ (256 bytes of attributes) followed by ...Strange non-working software20 years ago I had a Spectrum 48k. It wasn't damaged but some programs (games) didn't work. For example "Ghostbusters" always crashed after the title…
... : Simply knock them into a table to remove their 'strain'... :lol ... it was winded up irregularly. Knocking it would align the tape roles ...Microdrive CATIs there a way in Basic to obtain any more useful info on the contents of a Microdrive? File size, head info for example? Also, is it possible in ge…
... ]
There can be up to 8 microdrive maps and ... show, out of the theoretical 256 sectors available, just how many ... to assemble the next 512 byte buffer before the next sector ...
