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How to check the whole memory on a +2 greyHi everybody!!! I suspect that i have a bad memory chip on my +2 Grey. Does anybody know if exist any utility to check the whole memory? Thanks a …
... pourri/ramtest2.asm]RAMtest2[/url] routine. I wrote it this afternoon ... check section of the self-test code from the +3 ... that runs from the test screen after pressing "QAZPLM", ... ; Spectrum +2 (not +2A!) RAM test
; assemble & run at ... -
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 …
... both the standalone "un-reverse" routine, and an initial version of ... didn't have time to test any of this yet, or ... -
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 …
... /> 110 bytes.[/QUOTE]
Calling address $22b0 was a great ...
[/CODE]
The entire routine (including additional code at the ... -
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 …
... /> [*]ZX7: 26399 bytes (without decompression routine)
[/LIST]
[/QUOTE]
ZX7 with the compression routine+calling code = 26399 bytes. -
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 …
... />
EDIT: I tried the routine with the game code. Unfortunately ... try to activate it by calling the program start with RANDOMIZE ... custom font). I guess the routine can successfully manage to compress ... -
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 …
... />
EDIT: I tried the routine with the game code. Unfortunately ... try to activate it by calling the program start with RANDOMIZE ... custom font). I guess the routine can successfully manage to compress ... -
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 …
... are generated by the saving routine of Multiload, and most probably ... at 9900 (reused in zx7 calling)
[CODE]
9900 POKE ... -
RAM used / corrupted by +3DOSAs I said previously, [url=http://www.worldofspectrum.org/forums/showthread.php?t=41775]I'm trying to put some games in hard disk[/url] so they can b…
... or unless a different interrupt routine has been loaded, the + ... the disk motor timeout routine as part of the ... back whenever a DOS routine is going to be ... of the game's IM2 routine shifting stuff around - ... from those in the self-test section) and the EI ... -
Adding TAP file contents to a Spectrum +3e DOS PartitionHello my fellow WoS'ers, This thread is a companion to a great little guide from a fellow AmiBayer [B]mnjnurney[/B] you can view his thread by [URL…
... using the standard ROM tape routine. It will actually extract anything ... to the parameters from the calling function (although trying to change ... -
Adding TAP file contents to a Spectrum +3e DOS PartitionHello my fellow WoS'ers, This thread is a companion to a great little guide from a fellow AmiBayer [B]mnjnurney[/B] you can view his thread by [URL…
I've got TAP2DSK creating the executable loader now. I've tidied up the display a bit (aligning the numbers) and added a couple of little progress indicators, plus now it displays the new loader lines as it builds them.
[center][img]http://www ... -
Converting games to disk: difficult loadersThis thread has an spanish version in foro speccy, but I haven't gathered enough information to overcome my problems. I've been converting some game…
... at the end of the routine you'll see the execution ... save it to tape or test it with RANDOMIZE USR 40960 ... -
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 …
... snippet is a simple get_bit routine with single bitstream. Of course ... must be 0 before get_bit calling. To fix this issue we ... we can make this new routine:
[CODE]
next_byte inc ... news is that with this routine and only cp/sub instructions ... -
Compiling Lisp to Z80.I am doing some thought experiments on this. Here is an example of a Lisp program. It adds two numbers together. [code] (define (add x y) (if (= …
... has one stack. What other calling convention would you suggest?[/QUOTE ... result of a machine code routine in the registers BC. Some ... it's okay to have calling parameters in the stack (unlike ... -
Compiling Lisp to Z80.I am doing some thought experiments on this. Here is an example of a Lisp program. It adds two numbers together. [code] (define (add x y) (if (= …
... result of a machine code routine in the registers BC. Some ... it's okay to have calling parameters in the stack (unlike ... the stack, and call the routine, then the return address will ... -
Beta testing FuseHello everyone, We are preparing Fuse for a new release soon and would appreciate help in testing that all the new features and all the old features …
... offer to the if1 input routine... So, interpreted mode work only ... ...
How you can test it?
1. create a ... -
Adding TAP file contents to a Spectrum +3e DOS PartitionHello my fellow WoS'ers, This thread is a companion to a great little guide from a fellow AmiBayer [B]mnjnurney[/B] you can view his thread by [URL…
... either use a tape load routine from within the game or ... I used set up my test files, anyway. I used Mael ... -
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 …
... . Then I wrote this simple test program:
[CODE]
10 ... with the "normal" ZX7-only routine instead.
I'm ... -
Best way of converting TZX to TAP?Can anyone recommend a utility to convert TZX files to TAP format? I had a go with "Win_TZX2TAP", but the conversion success rate was maybe 75% - se…
... different emulators to save a test file, and in both cases ... shows the correct size, but calling DOS_GETEOF returns the wrong size. -
RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…
... /> To put the routine even more to the test, I compiled the ... added a small M/C routine to the BASIC starter program ... -
Getting PC into HLHello, here's a conundrum for you... Is there a way to obtain the value of the PC register (say into HL) without using absolute addressing such as C…
... register with that address before calling it? Even if you're ... /> Suppose you wrote a complex routine that internally uses CALLs or ... would only work if your routine is called directly from BASIC ... -
Getting PC into HLHello, here's a conundrum for you... Is there a way to obtain the value of the PC register (say into HL) without using absolute addressing such as C…
... my approach: make the routine search for itself!
... /> ;End of PC detection routine.
ld ...
The above routine is position independent, works whether ... />
TAP version to test with it:
[url]http ... -
Getting PC into HLHello, here's a conundrum for you... Is there a way to obtain the value of the PC register (say into HL) without using absolute addressing such as C…
... it, how about this ridiculous routine?
[CODE] ld hl ... the OR A instruction to test for Z flag is not ... -
RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…
... /> To put the routine even more to the test, I compiled the ... added a small M/C routine to the BASIC starter program ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... /> [*]Having inverted logic in the test for disciple_active when applying memory ... address #0000". (And then the routine described at #2001 is run ... #0000 and a.o. the routine at #0008 will be run ... -
Just a curiosity of mixing synth with samplesThis is really a proof of concept, I made for the idea of playing simultaneously two ZX Spectrum computers, where one is playing chiptune music and t…
... has its own interrupt routine, so that would have ... time... if the interrupt routine takes too long, it ... 'buzz'. The standard Soundtracker routine is possibly a bit too ... However I didn't test this format is the ... (this one I didn't test).
I played the ... -
Assembler v Machine CodeHi. I've been looking at a lot of the code examples in the Development section and can see that Assembler is the way to go. However, I was wondering …
... take time to streamline a routine on the PC ... it's ... haven't even bothered to test the power of the new ... -
Assembler v Machine CodeHi. I've been looking at a lot of the code examples in the Development section and can see that Assembler is the way to go. However, I was wondering …
... a disk based build and test environment (Windows, Linux, Mac, Amiga ... automatically jump to its download routine and receive the next update ... -
BIN2BAS (load BASIC text into emulator) utilityI've nearly finished testing this. It allows a BASIC program to be loaded from a text file in any emulator which has a "load binary" option. I was wo…
It uses the ROM LINE_SCAN routine for syntax checking, so IF. ... be a simple matter of calling LINE_SCAN either. I'll have ... -
BIN2BAS (load BASIC text into emulator) utilityI've nearly finished testing this. It allows a BASIC program to be loaded from a text file in any emulator which has a "load binary" option. I was wo…
... the 128k Editor ROM 0 routine for syntax checking, so it ... the display file prior to calling any Editor ROM routines and ...
