-
GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…
... invisible using a completely separate routine (using traditional coordinate comparisons).< ... go. Best way is to test both approaches. ;)
...
[quote]
I will test a hybrid solution. Assume you ... is you get to test many solutions for the ... -
Multiply the value of 'a' by 5Is there a way of multiplying the value of 'a' by 5? I've tried 'add a,a' etc. but only get multiples of 2...
... line of BASIC and calling the BASIC routine to execute that line ... by using the BASIC maths routine) which is useful as Spectrum ... -
128K+ Keypad Swapsies.I've been offered a swap, a Spanish 128k keypad, for one of my UK microdrives. Is this a good swap?
... it up to an IM2 routine:
[code] push af ... 's no emulator you could test it on ... so before I ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... wasn't happy with either routine, and of course BASIC80's ... palette.[/QUOTE]
On a test I made something when wrong ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... column mode. The 85 column routine in BASIC64 is really slow ... .
[quote]On a test I made something when wrong ... -
Low level microdrive programmingSo I'm on my lunch break trying to find out about low level microdrive programming (without using IF1 ROM). I see one can use port 0xe7 to read and w…
... a sector separator. The read routine first looks for a non ... /> Before B, you need to test the wr-prot bit. At ... -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... happens with the NMI service routine. Execution starts at 0066h (FETCHNMI ... />
UPDATE: while performing some test with the original GAL, the ... -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... B]
I test it on my first +2 ... 48basic.
I test messenger also with my next ... with 128 rom because routine for return from NMI ... after press SPACE this routine refresh all register and original ... [/I]
I test all ZX128 and +2 rom ... -
Issue 2 Failed 48k to 128k upgradeI have been trying to upgrade my Issue 2 with the help of Velesoft, using this schematic; [IMG]http://i764.photobucket.com/albums/xx284/arioch1973/4…
I got a new test software for the DivIDE eeprom ... 2 wont even load this routine. After having spent a couple ... running.
With the test eeprom from velesoft I removed ... dont know what else to test.
Lower ram simply ... -
WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …
... point out that the following routine won't work correctly ... not much longer than the routine from the book.
... out that the INKEY$ routine in the ROM doesn't ... 116, but the BASIC routine would also have to check ... I didn't actually test that bit insofar as ... -
Issue 2 Failed 48k to 128k upgradeI have been trying to upgrade my Issue 2 with the help of Velesoft, using this schematic; [IMG]http://i764.photobucket.com/albums/xx284/arioch1973/4…
... very simple machine code routine to just test the Z80 MPU, the ... instead of doing your own test EPROM, use someone elses... (see ... -
Issue 2 Failed 48k to 128k upgradeI have been trying to upgrade my Issue 2 with the help of Velesoft, using this schematic; [IMG]http://i764.photobucket.com/albums/xx284/arioch1973/4…
... very simple machine code routine to just test the Z80 MPU, the ... instead of doing your own test EPROM, use someone elses... (see ... -
40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…
... /> jr dontprint ; skip calling the print routine
notatting
... /> jr dontprint ; skip calling the print routine
notacr
... /> jr dontprint ; skip calling the print routine
notatchr
... -
merging bytesPicturing three bytes with their bits identified by letters to make the visualisation easier, what's the best way to perform this transformation? [co…
... bits for each tile and calling PLOT for every set bit ... copy the bytes with that routine. I'd made it a ... -
BEEP / PLAY equivalentI'm so tired I can't even think of a proper title for this. Has anyone seen a table showing a comparison between BEEP notes durations and equivalent …
... proceeded to compiling that BASIC routine just to prove that even ... RANDOMIZE USR, a sample playback routine made with machine code. But ... WAV2AY program and lame playback routine on my old HDDs but ... complete.
I did not test speech, but it is surely ... -
Diagnosing a strange software fault in a 48kHi, A friend gave me a 48k, which I am very keen to restore. The spectrum 48k was my first computer over 20 years ago and I owe my ability to code t…
... check done by the ROM routine doesn't discover the problem ... (but far from perfect) RAM test program you could try. I ... -
Help needed...I am at my wits end with this pigs ear of a routine, can anyone simplify it and make it work as it should? Basically it should make the characters '…
... to 1, then call the routine at 32768.
2 ... to 7, then call the routine at 32768.
3 ... to 1, then call the routine at 32768.
[CODE ... get the impression you're calling this from an in game ... -
Diagnosing a strange software fault in a 48kHi, A friend gave me a 48k, which I am very keen to restore. The spectrum 48k was my first computer over 20 years ago and I owe my ability to code t…
... BASIC test programs, but became apparent once a machine language routine was ... -
DIGI SCAN or DIGISCAN (missing tech?)(Also see [URL="http://www.worldofspectrum.org/forums/showthread.php?t=41058"]this thread[/URL]. ) What is known about this DIGISCAN (upper right co…
... Micro Mutant, which consisted in calling external routines to give the ... just something like that, calling some external routine to use digitized graphics ... -
Yumiko in the haunted MansionSo, here is the promised Halloween preview... Go to the zx section of my homepage to download it. [img]http://members.inode.at/838331/zx/YomikoInTheH…
... to handle the code by calling the dummy routine after END). -
Yumiko in the haunted MansionSo, here is the promised Halloween preview... Go to the zx section of my homepage to download it. [img]http://members.inode.at/838331/zx/YomikoInTheH…
... handle the code by calling the dummy routine after END).[/QUOTE]
Cycle exact emulation?I was just reading the thread about +3 emulation having different results on different emulators, and it made me wonder if any Spectrum emulators hav…
... ]Megalomania was one of the test cases[/url] that first established ... I added the Soundtracker player routine - which is called well [I ... those scanlines. Once the player routine there was some flicker in ...Machine code RST10 problemHello! After 27 years of playing with Spectrums I'm starting to look into doing assembly language properly. All went swimmingly well until I wrote …
... the routine with a debugger and see it loading characters, and calling ... you enter a machine code routine after typing RAND USR xxxxx ...Machine code RST10 problemHello! After 27 years of playing with Spectrums I'm starting to look into doing assembly language properly. All went swimmingly well until I wrote …
... the three standard ones before calling it. [/QUOTE]
That ... up pointing somewhere random. The routine as it stands now is ... $1601 ; ... and call the ROM routine to activate it
ld ... ,8; INK 8; PAPER 8" routine for 16 character messages. It ...Machine code RST10 problemHello! After 27 years of playing with Spectrums I'm starting to look into doing assembly language properly. All went swimmingly well until I wrote …
... I found the ROM interrupt routine overwriting data that IY was ... needed to be done before calling ROM routines too. Silly boy ... 't be reinstating the RST10 routine in my project unless I ... newer direct screen memory write routine is faster. But at least ...Optimisations in Exomizer Z80 decrunch codeThis is the 163 bytes old code (simple and optimized): [CODE] ld iy, exo_mapbasebits ld a, 128 ld b, 52 push de exo…
... upon the type of depack routine you wish to use - and ... mark test, right, so obviously its about comparing the best depack routine ... ?)...
... but which routine should we be ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
[QUOTE=antoniovillena;672340]The idea is that you add an option in the compressor to avoid >255 length (an output a shorter escape secuence). So you offer 2 decrunchers, one of 68 bytes (option disabled) and other of 64 bytes (option enabled). Also you ...TRUE VIDEO, INV VIDEO!Am I the only one who thinks the two keys "TRUE VIDEO" and "INV VIDEO" on the 128/+2/+3 keyboards are pretty much useless, since embedding control co…
... will go into the +3 test program:
[code]
... c,(hl) ; get address of routine to execute
inc hl ... loopback connector" or having "factory test equipment", but to get through ... necessary to have the +3 test disk to put in.TRUE VIDEO, INV VIDEO!Am I the only one who thinks the two keys "TRUE VIDEO" and "INV VIDEO" on the 128/+2/+3 keyboards are pretty much useless, since embedding control co…
... get to the +3 self-test page on any Spectrum emulator ... [/QUOTE]
The testcard routine doesn't read keypresses though ...
