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Coding for 128kHi all, I wonder if anyone can suggest any useful reading/threads/examples on the fundamentals of 128k coding. Chapter 24 of the +2 manual has prov…
... ram pages switched instead ZX rom. Also Divide PLUS support true ... 16kB ram page instead zx rom
..... your allram software....
RST 0 ;restart system
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 '…
... /> call 5633 ;tell ROM we're in the upper ... ;...is switched on
rst 16
call print_string ; ... ld a,(ycor)
rst 16
ld a,(xcor ... )
rst 16
ld de,(stringseed ... bytes
call 8252 ;ROM print string
ret< ...semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…
... a ROM directly, as long as connections on the board (socket) are ...semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…
... a ROM directly, as long as connections on the board (socket) are ... I think.[/QUOTE]
The ROM used in the Spectrum has ... the decoding circuits for the ROM simple.
EPROMs only ...semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…
... change which pin on the socket corresponds to those signals
rom chip being selected.semi dead speccy 48k who can helpHi forum , i am busy recovering a 48 k speccy issue 3 board unit. With the help of a more experienced spectrum user from the uk , i managed to get…
... to verify the change in rom//eprom , and with the ... that a straight swop of rom vs eprom cannot work ... find about having both possibilities ( rom and eprom ) is to ... ) on the rom , and then plug it into the socket .
... i don't have a rom.
I ...Help me resurrecting a 128KHello to everybody. I'm really struggling along a repair of a standard 128K a friend of mine handed me over some (ok, actually a lot of) time ago. A…
... /> Just desoldered IC27, put a socket and tried both a working ... :
1) The service ROM is the one found at ...[Free] BBC MasterHopefully this thread is OK with the mods, Figuring (1) its a freebie and (2) we all like preserving older hardware anyway. Right then, I need to re…
... the 'free' one the Mos rom is soldered in so it ... want chopping out and a socket fitting, not a big job ...The great 128k ConversionWell, I am not sure if it is going to be great. Hopefully it will! This evening, I set about getting my Issue 6A Spectrum Plus working. I suspecte…
The ROM socket on my 48k issue 1 is upside down as well.
[B][I]Mark[/I][/B]zx spectrum 128+2a/b questionsIv just purchased a 128+2 and have only one game for it lol (Super stunt man). A few question if anyone can help.. 1)I'd like to run games through …
1) Sound socket is an output socket, so you won't get ... , there may be minor differences (ROM versions and some modifications 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 …
RST $10 outputs to the current ... use. A copy of the ROM disassembly always comes in handy.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 …
... call $1601 ; ... and call the ROM routine to activate it
rst $10 ; otherwise print control character ... business down immediately before the rst $10, with surrounding "push ... I've looked at the ROM disassembly but my brain starts ...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 …
...
[QUOTE=Battle Bunny;665943]RST $10 uses EXX to reference ... call $1601 ; ... and call the ROM routine to activate it
rst $10 ; otherwise print control character ... ; load character into A
rst $10 ; print 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 …
... you're not calling any ROM routines which use the E_LINE ... channel information area and then RST $10 would stop working ... which ...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 …
... you're not calling any ROM routines which use the E_LINE ... /> Thanks for that. The only ROM routines I plan to use ... channel information area and then RST $10 would stop working ... which ...Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…
... thinking of using the joystick socket to receive the serial MIDI ... .htm#RS232Wiring"]programming his ZXC3 ROM cartridges[/URL] using the IF2 ...Ay Real Time Synthetizer SoftwareSpectlemen and Spectladies!It's been a long time that I'd like to ask this.... I ask thee to create a new musical software for our ZX Spectrum machi…
... decoding etc), the +128K RS232 socket or a new interface (not ... 6 pins of the RS232 socket are connected internally; none are ... Spectrum 128 ROM 0 disassembly[/URL]:
"The RS232/MIDI socket is ... serial data over 128K RS232 socket[/URL]
Somebody ...Spectranet updateHi all It's been a busy summer, and in any case I've wanted a little bit of a break from doing Speccy stuff to avoid it getting old (pun intended). …
... main spectranet calls and the socket library. File system stuff requires ... filesystem, right? And there are ROM routines already working with them ...calculator and sinusok, look at the Sysel's routine: [PHP]3 5b00 *s 4 5b00 tabsin = #7000 03 mksin 19.11.1995 Busy soft …
... /> would be great to find ROM routine which prints FP from ... .
2DE3 PRINT-FP RST 0028,FP-CALC Use the ...TKMEM - the 128K interface for 16K SpectrumsHello all! Here in Brazil, we have made a small production of an interface, totally based on Velesoft?s memory expansion ([url]http://velesoft.speccy…
... project and added an 128 rom. :D[/QUOTE]
My ... external 128kB upgrade support also ROM chip connection (eprom/flash eprom ... will version with one memory socket (for sram+flash eprom) and ... next socket for AY chip ( size of ...What kind of Spectrum year was 2012 for you?2012 was for me a low Spectrum year, I coded just 1 game and that was only during the Spectrumdays in Cambridge. So on Spectrumfront it was low, but…
... board that plugs into the rom socket and let you choose between ...Adding IDE to your Spectrum +2 A/B (or +3)Hello my fellow [B]WoS'ers[/B] [B]This is a shared thread with [url]www.amibay.com[/url] which you can [URL="http://www.amibay.com/showthread.php?t=…
... pins in the disc drive socket but were it possible to ... four compact flash cards - need rom rewrite too? no room for ...Adding IDE to your Spectrum +2 A/B (or +3)Hello my fellow [B]WoS'ers[/B] [B]This is a shared thread with [url]www.amibay.com[/url] which you can [URL="http://www.amibay.com/showthread.php?t=…
... pins in the disc drive socket but were it possible to ... four compact flash cards - need rom rewrite too? no room for ...Another cause for DivIDE problems on 48K'sThe last months some topics were opened to discuss problems with 48K ZX Spectrums and DivIDE. Sofar we found: - Bad Z80's because of poor fanout (si…
... =kpuchatek;677263]... or add 16k ROM to divIDE and disable ZX ... ROM completely.
This would allow ... ZX48 rom and divide system in one eeprom chip :-) EEPROM socket on ...Another cause for DivIDE problems on 48K'sThe last months some topics were opened to discuss problems with 48K ZX Spectrums and DivIDE. Sofar we found: - Bad Z80's because of poor fanout (si…
... = faster disabling internal ZX rom = ZX rom have longer time for disconnection ... ZX48 rom and divide system in one eeprom chip :-) EEPROM socket on ... is too large for the socket ;)
Somehow ... Spectrum owners with a NEC rom that want to install ...Full disk systems for ZX Spectrum?Hello. Although I don't use much more than TR-DOS, but an acquaintance of mine, a user of Atari XL/XE, always says (which is annoying and irritatin…
... is read from DivIDE flash ROM. From the point of view ... disk drive has its own ROM, RAM and CPU. The DOS ... Spectrum uses a high-level socket oriented protocol to perform net ...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…
... ???[/QUOTE]
The 48k ROM is paged in when the ... deck connected to the TAPE socket on the +3 to be ...ZX-Preview 2.2 publishedDear readers, yes, it's a big time of beta-testing and publishing, but I want to get my time free for my new project ZX-Assembler. Two days ago I r…
... ,($5800)
OR $DD
RST $20
Nice work ... -do-list. Also, loading a ROM label file could be implemented ... which replaces all ROM calls by names of the ...+3e filebrowserHello everyone, Im writing a game/program loader for the +3e (with an IDE interface, but it can work with floppies too). The program lets you choose…
... CALL & RETADDR in ROM.1 might be different), will ... filename in WORKSP
rst $30
ld hl ... out (c),a ;switch to ROM.1
ei
... out (c),a ;switch to ROM.3
ei
...The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…
You can use the ROM B of a +2A to boot in 48K mode, then load a tape with a program that writes into the EEPROM, and finally swap the ROM B with the AM29010. The 27c256 must fit between pins 3 to 30 of the socket, and you must supply VCC to the pin 30.
