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A sped up pixel-shift routine for 1-byte–wide spritesHere’s an optimized (for speed) real-time sprite shifting routine for sprites that are one byte wide. It uses no memory variables for storage of inte…
... /> inc l ;advance to next byte (make sure sprite data is ...
dec l ;back one cell to the left ... l,a ;and put it back in L
jr ... else, load A with high byte of screen address
sub ... h,a ;and put it back into A
... -
Design Design / Crystal ComputingNice post on [URL="http://groups.google.com/group/comp.sys.sinclair/browse_thread/thread/56e6ebdedc6930ac#"]comp.sys.sinclair[/URL] about [URL="http:…
... of forgetfullness involved when looking back at old sources - the style ... was different back then. I used to get ... DEFB to one byte) whereas NOP took one byte - tokenised again.
Cheers, Simon. -
Fuse for Mac OS X beta releasesA beta version of Fuse for Mac OS X has been released at the dedicated sourceforge project: [url]http://sourceforge.net/projects/fuse-for-macosx/[/u…
... work (Gergely Szasz; thanks to Simon Owen for expert technical advice ... control port causes that byte to be written back to the port ... to unHALT (Philip Kendall; thanks, Simon Owen).
[*] Emulate C, H ... -
Z80 Assembler for Win7 PC (64-bit)Does anybody know where I can get a decent Z80 assembler that will work on my 64-bit Win7 PC? I tried the first one in the WoS utilities and it would…
Thanks again Simon.
>>(Don' ... my disassembler first by assembling back to the original binary. But ... 0xfd are followed by a byte that is not an instruction ... -
New Spectrum game - HomebrewWell, I finally got around to finishing the game I was supposed to finish at Urbis. Featuring lots of rather nice brightly-coloured graphics by Jarr…
... quite cute too ;)
Maybe Simon or Graz from Cronosoft are ... that he'll keep coming back for more because he knows ... should fix that...
Byte Me was another frantic single ... lines. If you like Homebrew, Byte Me should be just your ... -
What is the "SPECTRUM" keyword on a 128K?The 128K replaced UDG characters T and U with new commands; PLAY and SPECTRUM (or possibly the other way around.) The manual ([url="http://www.wor…
... was a spare 0FFh byte in the ROM to ... except it turned out the byte was used, as the error ... experimentation reveals that the byte in question is at ... ROM 3. Change it back to 0FFh and the error ... Strikes Back cover, Pages 71/72
Also features Simon Owen ... -
Back 2 School ObjetivesWell, the other day sit and remembered all Spectrum Games, But I forget the objetives of the game Back To School. So if someone can help me, I?ll be …
... the objetives of the game Back To School.
So if ... emulador empec? a jugar al Back To School, pwero me encontr ... -
Back 2 School ObjetivesWell, the other day sit and remembered all Spectrum Games, But I forget the objetives of the game Back To School. So if someone can help me, I?ll be …
... the objetives of the game Back To School.
So if ... emulador empec? a jugar al Back To School, pwero me encontr ... -
AY musicThis is a format I'm proposing for an AY music player. If anyone can see any problems or anywhere it can be improved please say so. An AY music form…
... previous effects 2bit null 1 byte instrument select - Selects ... 4bit AY envelope waveform 1 byte coarse control - Selects a ... the instrument is played back, this would normally be ... able to read it back in and shift the ... streams back into their blocks to ... -
Assembler code from tutorial, problem!I was wondering if anyone could help me decipher this z80 assembler code? ORG 60000 LOAD 60000 EA60 21BCEA LD …
... /> EA6F 18F2 JR OVFLOW ;go back for next digit
this overflow byte or something??? I am truly ... -
Zzap! came back...Whatabout Crash!?C64 news but dont flame me yet..some connection with the Spectrum.... Dunno if you know this but Zzap!64 (newsfields other mag) has got a brand new …
... get an old Zzap! editor back at the raines, got some ... -
Atari is back! So....Yep, I just read that infogrames who own the Atari label have decided to re-name themselves Atari Inc. Which means, Atari (the label not the company)…
... label not the company) is back in business!
Is ... -
back 2 skoolcan any1 tell me how2 drop mice in back 2skool.its buggin the hell outa me.
can any1 tell me how2 drop mice in back 2skool.its buggin the hell outa me. -
write TZX back to tapeHow can i write TZX tape images back to a tape to play the game using the real thing and not an emulator?Emulators are fine..That way you can enjoy a…
... i write TZX tape images back to a tape to play ... -
Mastertronic are backThe Return of the King 20 years on, the most famous re-publisher of them all is set to return to the industry. Mastertronic will be re-launched by ga…
... an ideal opportunity to bring back a true classic British brand ... -
Hes backRebelstar is back online, erm, so there.
Rebelstar is back online, erm, so there. -
128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …
... bits - the rest of the byte stays the same.
back out.
What I ... expects nn to be one byte, so how is it done ... -
STP: Computer Cookery 1 & 2 - Bug ByteI'm 99% sure these two titles are actually The Computer Cook Book (Bug Byte) that is listed in Infoseek. However, The Computer Cook Book is in fact …
... The Computer Cook Book (Bug Byte) that is listed in Infoseek ... -
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.. -
Back 2 Skool/Skool Daze/Contact Sam CruiseI used to own back 2 skool and skool daze, and I remember playing contact sam cruise on an emulator years ago and discovered it was the same type of …
I used to own back 2 skool and skool daze, and I remember playing contact sam cruise on an emulator years ago and discovered it was the same type of game. My question is, did the authors of these games release any other games? -
New steel back plate(mini mod) for spec48k+ & 128k+Hi, Well I decided to do a sort of small mod to the original plastic back plate (that secures the membrane and keyboard) on my 128k+. I noticed after…
... mod to the original plastic back plate (that secures the membrane ... pressed, would flex the plastic back plate.
So I decided ... -
*New steel keyboard back plate for 48k+ and 128k+Hi, As you may recall(a few posts back), I did a sort of modification of the original keyboard backplate. I found a company that made a few for me fr…
... may recall(a few posts back), I did a sort of ... -
Entire Sinclair Software Collection For Sale - Built Up Since 1988!Sinclair Spectrum Software For Sale Information below includes the title of the software, the type of media it is supplied on and the price. I can a…
... br /> ?2.50
Back To Skool (Alternative Software ? 1988 ... />
Glider Rider (Bug Byte ? 1988)
48K ...
Last Ninja 2: Back With A Vengeance (System 3 ...
Space Ace: Venom Strikes Back, Xevious, Northstar, Zynaps, Trantor, ... -
Can anyone help me...?Please can anyone help? For duplication reasons, I need to convert the library of Cronosoft .TAP and .TZX files to .WAV files, so I can put them ont…
... me back the .WAV files?
Thanks in abundance,
Simon -
ANN: Update to CRASH Online 19th June 2004A few new reviews on CRASH Online: the Smashes Klax and Pipe Mania, plus SAM Manic Miner. [url="http://www.crashonline.org.uk/"]http://www.crashonli…
... ]
Special thanks to Simon Owen who generously sent me ... actually the level "No Way Back" with a changed screen name ... -
Manic Miner Tape InlaysJust a question for you, how many different inlays were there for manic miner ? I have found the Software Projects "Alien" and Bug-Byte "Miner" inlay…
... Software Projects "Alien" and Bug-Byte "Miner" inlays but I have ... a third inlay by Bug-Byte brown back ground with an alien ... -
how do you convert emulator files back into sound files?is there a way to convert emulator files back into sound files? if there is can someone please let me know. thanks -jonny
is there a way to convert emulator files back into sound files? if there is can someone please let me know.
thanks
-jonny -
how do you convert emulator files back into sound files?is there a way to convert emulator files back into sound files? if there is can someone please let me know. thanks -jonny
is there a way to convert emulator files back into sound files? if there is can someone please let me know.
thanks
-jonny
