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Couple of questions...Howdy, 1. Is there a decent way to get a random number in BASIC/MC? I've been using LET a=INT(RND*2)+1 but the numbers tend to stay at 1 or 2 most …
... pRNG routine to populate the FRAMES system variable whenever it is read ... command and then starting the tape -
+2A/+3 compatibility fixes thread!It might be a good idea to keep these fairly common +2A/+3 compatibility fixes (and requests) in a single thread for quick reference ;) Let's start …
... the original tape!
The in-game sound effects routine also ... FOR F=63060 TO 63204: READ A: POKE F,A: NEXT ... -
Travel with Trashmanits appears there were 2 versions released of "travel with trashman" although the physical cassettes look pretty much idenetical, 1 was a fast load (…
... ability to check for any routine, any tzx block
... | | |- tzx = Side B
| |
| |-Tape 2
| |- tzx = Side A ... waffle and you lot have read this all the way ... -
Hidden routine in loading screenAs discussed in another thread, the loading screen for [B]Back To Skool[/B] seems to have a hidden routine (in blue INK and PAPER). It would be inter…
... of those bytes are read from the tape: 16384-32953 (16570 bytes ... , bytes are (pointlessly) loaded from tape into the Spectrum ROM. Yes ... sake of obfuscation (the load routine itself is modified in subtle ... -
z80 program to BASIN?I have a BASIC program with UDG:s loaded in a z80 snapshot file. I would like to edit the program with Basin, but I wonder what must be done before…
... or .tzx - open the Tape Creator tool and add your ... the UDGs in from the tape image.
Easier ... DATA statements with a POKE routine. To do this, load ... statements, with a POKE routine to get them into memory ... and don't forget to read the helpfile! It's ... -
Memory concerns with z88dkI've retaken my old spectrum project and sadly I've reached a dead end very fast. I'll try to explain my worst problem in a few lines. I'm not a vet…
... needs to be loaded from tape; it will also be uninitialized ... - d1d3 ------- JP to im2 service routine (im2 table filled with 0xd1 ... the spectrum, the z80 will read a random device id during ... registers and calls your music routine. It is important that you ... -
Speccy games programmingI've got a question. Where games written in pure machine code or was it a level higher with Assembly language being the choice? I always thought it…
... like the standard screen dumping routine:
[CODE]ld hl, source ... alone loading an assembler from tape to write the thing. Just ... it in with a FOR/READ/POKE/NEXT loop, along with ... -
Help! Reverse engineering a Spectrum game[deleted]
... .[/QUOTE]
If you read my post correctly I warn ... routines, thus adding a new routine when/if it is needed ... - Turbo loader with protection and tape counter
02 - Hires colour ... -
Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... microdrives.
I've read somewhere about if1 serial port ... am about to upload a tape test for you within the ... my +3 version uses the tape as well as the disc ... then the actual boot code routine. Maybe the snapshot could be ... -
Override AUTOLINE start?Hi there, Is there a poke that prevents a BASIC program from auto running, when it was previously saved with the LINE command? Cheers, Steve
... "fake" Basic header from one tape and then Basic code from ... the other tape. As far as I can ... program (Basic + small machine code routine) that could be loaded anytime ... needed. The routine would use the rom loader to read the header ... -
A clever method of using a single 8-bit register to be used for two things at a timeI don't know if this is the way the SAVE routine in the Spectrum works. Anyway, this is what I've learned today. I've been commented the disassembly…
... bits to process. This routine uses L with two roles ... are being written to the tape. One normally would use ... />
In the decoder routine I analyze in my article ... the data that is being read bit by bit, and ... the same as ROM load routine). The second marker bit, ... -
Screen$ command, ROM routineHi All, Does anyone know which ROM routine to call for the Screen$ command (and/or the ATTR command)? Any comments on how well it works or the spee…
... -Tape;504748]Hi All,
Does anyone know which ROM routine ... the ROM disassemblies I've read (any easy to follow ROM ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... save from disk instead of tape.
EDIT: Another ... familiar with the "put_character" routine but I think it ... we'll trap that routine and make many more ... execute RET instruction when our routine is finished.
EDIT: ... need a way to read and write to and ... -
Help with custom loader neededAs people here became active recently about MakeTzx and tzx format in general, I have thought that I would post it here. I have some .wav recordings…
... TAIL pulses ? I need to read more about the PZX format ... br />
Yes. You can read about them in the format ... of the times the saving routine explicitly generates such additional pulse ... dodgy semantics with respect to tape browsing, and by requiring seeking ... -
Help with custom loader neededAs people here became active recently about MakeTzx and tzx format in general, I have thought that I would post it here. I have some .wav recordings…
... ;528496]Yes. You can read about them in the format ... of the times the saving routine explicitly generates such additional pulse ... interesting stuff. Anything is regarding tape preservation, regardless of the ... it just looks easier to read when looking at TZXs ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... any other z80 machine code routine would be... Im really basic ... (z80,SNA) or as simulated tape files (tap,tzx, for instance ... is running... Im sure I read about them here, but would ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... still have to implement display_screen() routine? All I see now is ... -
New game: WUNDERCHAR$Hi All, Finally finished my latest game: Wunderchar$. [IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/loadingscr.gif[/IMG][IMG]http://…
[QUOTE=R-Tape;553222]Hi Fikee,
...
RE: the sp routine to ... when you use stack to read graphics and compute next line ... -
Challenge Sprint 4x tape recorderHi, I noticed a [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000051"]Challenge Sprint[/url] on eBay, and checked out the WoS entry for it…
... regardless of the polarity the tape were recorded with.
... will be the value read by the computer, but ... hence a '0' will be read.
Reviewing ... instructions after that, the routine retrieves the bit again into ... value of bit 0 read in the previous IN ... -
Challenge Sprint 4x tape recorderHi, I noticed a [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000051"]Challenge Sprint[/url] on eBay, and checked out the WoS entry for it…
... very heart of the loading routine, and the code that ... CLOCK happens. The byte loading routine that follows, just have ... that is being read from tape. First bit
;read is MSb.< ... ;discard return value for this routine
ROM:0536 xor ... -
New WIP underway - 'Dingo'.Hi, Prepare for a long post. Perhaps I can even challenge ewgf here. :razz: Anyway, I've been meaning to get into Z80 programming and making a game…
... -Tape:< ... /> ; Kempston joystick read...
ld bc ...
; ----------------------------------------------
; ROUTINE: print_message
;
; ...
; ----------------------------------------------
; ROUTINE: get_defined_key
;
... -
Krakatoa not workingI can't get any of the Krakatoa files in the archive to load on spin or zxds. Anyone else had this problem?
... Krakatoa if you find what routine read 2 times in this 2 ... /> 5B1E JR NC,5B41 ;Tape Loading error: Beep, print error ... ?
5B38 JR 5B41 ;Tape Loading error...reset
5B3A ... ;Start game
5B41 .. . ; Tape Loading error...reset
[/QUOTE ... -
Alkatraz protection systemI recently became interested in the Alkatraz protection system, a very widely used tape protection (a infoseek search returns more than one hundred r…
... at that point in the tape.
[QUOTE=richl;587042 ... input is not a real tape.
Can I have ... being measured on the save routine. Anyway, I'm talking about ... the TZX are the ones read from the WAV. -
New project: CargandoLeches. Ultraloads with ROMHi This project has started months ago, between decicoder, macleod and me. Uses the best modulation of k7zx (throwing shavings). But this ultraloa…
... you are playing a regular tape from one that has been ... the stardard load frecuency, the routine comes back to the original ... ... its almost a pleasure to read it... ;)[/QUOTE]
Thank ... -
Another BUG play tapes, in ALL EMULATORs when press STOP1 FOR n=1 TO 20 : PRINT IN 254 : NEXT n : PRINT AT 0,0 : GOTO 1 RUN Type this simple code, load a TZX, pres PLAY, when ear input change between 191 …
... does the Spectrum's interrupt routine which your BASIC program is ... EAR input bit. The value read from this port is not ... not change never.
The tape player, change bit 6 of ... -
Help with custom loader neededAs people here became active recently about MakeTzx and tzx format in general, I have thought that I would post it here. I have some .wav recordings…
... days/weeks I've read lots of threads like ... /> I disassembled the loader routine, and concluded only two timings ... '1' (though loading routine ignores its value). Thus, ... for taking care of tape speed deviation, that ... is very difficult to 'read' from the wave when ... -
Official Basinc thread - Bug reports and other discussionI just released a new BASin fork, basinc. The first official release was V16r2, and today it's r3. it's uploaded to wos archive and alternatively, h…
... item actually triggers a read Load"" under emulation, it ... basin, ofcourse this rom routine is trapped by basin ... basin from loading from tape and will default to ... item that always ignores tape and show a ... way of detaching a tape once attached without closing ... -
Official Basinc thread - Bug reports and other discussionI just released a new BASin fork, basinc. The first official release was V16r2, and today it's r3. it's uploaded to wos archive and alternatively, h…
... , menu item actually triggers a read Load"" under emulation, it's ... "" in basin, ofcourse this rom routine is trapped by basin to ... stop basin from loading from tape and will default to harddisk ... clear button on tape editor to detach tape from basin.[/QUOTE]
ISO-Copy - Individual Software revisitedHi folks In another thread about Supertape: [url]http://www.worldofspectrum.org/forums/showthread.php?t=36203[/url] ... we touched on ISO-Copy by th…
... directly to the byte loading routine at ROM
5CEE CALL ... code calls to ROM loading routine, to the exact point were ... the above rotates the bits read (no matter how bad it ... for preservation purposes and for tape data representation, don't you ...
