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<1…17181920212223…34>
  • DIVIDE PLUS - new memory mode DIVIDE128Divide PLUS contain 512kB sram + 512kB flash eprom. Memory paging in this device is enable on two different ports : 1) port #E3 is compatible with o…

    ... to DIVIDE128 mode with mapram (rom emulation):

    [ ... bytes
    LDIR ;copy rom image with divide system from ... to all ram pages for rom emulation(mapram pages)
    ... 1(memory ROW1)
    RST 0 ;restart system from first ...
    velesoft velesoft June 2013 Hardware
  • Colour whilst PLOTing in MCI am using the ROM PLOT routine at $22E5, how do I control the colour of the results, so I can preferably use INK 8, it seems to have a mind of its o…

    ... ;708459]I am using the ROM PLOT routine at $22E5, how ... and PAPER controlcode with the RST #10 printroutine.

    16 ... />
    LD A,16
    RST #10
    LD A,6 ...
    RST 16

    will set ...
    Dr BEEP Dr BEEP June 2013 Development
  • FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…

    ... 's a call to the ROM "out of screen" error report ... />
    jr c, in_screen
    rst 8
    defb 4
    chev chev July 2013 Brand new software
  • Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…

    ... pressed
    jp z,0x1b7b ; ROM routine indicating BREAK (code L ... was a tape error
    rst 8 ; error restart
    defb ...
    stephenw32768 stephenw32768 August 2013 Development
  • Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…

    ... pressed
    jp z,0x1b7b ; ROM routine indicating BREAK (code L ... was a tape error
    rst 8 ; error restart
    defb ... if it's in the ROM
    ret nz ; return if ...
    stephenw32768 stephenw32768 August 2013 Development
  • Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…

    ...
    jp z,0x1b7b ; ROM routine indicating BREAK (code L ... was a tape error
    rst 8 ; error restart
    ... br /> and a ; wrapped into ROM = all attrs loaded
    ret ...
    stephenw32768 stephenw32768 August 2013 Development
  • Hardware description - PLUS D interfaceThis new thread will contain onformations of different ZX devices. Some devices contain manuals, schematics or firmware for some chips, but some peop…

    ... jump to 00000000 00001000 = #0008 (RST 8)
    ; or 00000000 00111010 ... connection is from #0000-#1FFF ROM 8kB


    /RAMCS ...
    velesoft velesoft August 2013 Hardware
  • Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…

    ... am cheating and using a ROM routine... but I am but ... ; LD A,21 "!"
    D7 ; RST 10
    C9 ; RETurn to ... nightmare....

    Whats the ROM magic?

    Time to ... look up the Rom Dissasembly book.. (very nice!)
    wibble wibble September 2013 Development
  • Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…

    ... 48 (H)
    D7 ; RST 10
    C306F0 ; JP ... LD A,20 " "
    D7 ; RST 10
    3E57 ; LD A ... LD A,21 "!"
    D7 ; RST 10
    C300F0 ; JP 61440 ... />
    still using stargate rom jumps to work the magic ...
    wibble wibble September 2013 Development
  • Faulty +3Hi all Hoping this isn't the 40077 dead on my +3 but....... [IMG]http://www.darrenwileman.co.uk/SPEC/Plus3.jpg[/IMG] Tried the following in anothe…

    ... of no ROM, as the CPU ends up executing RST 38 instructions ... />
    I'd recheck the ROM socketing, and if you don ...
    balford balford September 2013 Hardware
  • Interface 1bisHas anyone on here got a "Interface 1bis": [URL="https://sites.google.com/site/interface1bis/"]https://sites.google.com/site/interface1bis/[/URL] I …

    ... CODE]

    ROM EQU #7F; Page in ROM
    RAM EQU ... br /> ;
    COPY_R OUT (ROM),A; Page out RAM
    LDIR
    OUT (ROM),A; Page out RAM
    RST 0
    CODE_E
    ...
    Dan Antohi Dan Antohi September 2013 Hardware
  • SoftPLAY: Use the PLAY command from 48 BASICNow you don't need 128 BASIC to use the [B]PLAY[/B] command. Just use [B]PRINT #8;[/B] instead. [url]https://dl.dropboxusercontent.com/u/15659782/So…

    ... code via modifiing original ZX48 rom. Only write at address #000B ... will have to do the RST 8 handler though as I ...
    chev chev October 2013 Brand new software
  • SoftPLAY: Use the PLAY command from 48 BASICNow you don't need 128 BASIC to use the [B]PLAY[/B] command. Just use [B]PRINT #8;[/B] instead. [url]https://dl.dropboxusercontent.com/u/15659782/So…

    ... will have to do the RST 8 handler though as I ... at address #000B in ZX rom must be JP #ZXRAM and ... 't call parts of ZX rom, only after return from PLAY ...
    velesoft velesoft October 2013 Brand new software
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... 'ROM-0 ENTRY' SUBROUTINE
    org 0x0007
    rom0_entry:
    rst start ... ; jump back to start when coming from ROM 0 ... black
    ; ld e, 8 ; ROM 0, VRAM 1
    ld ...
    out (c), e ; set ROM and VRAM page
    ret ...
    chev chev October 2013 Development
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... br /> ld a, %00001111 ; ROM 0, VRAM1, RAM 7
    lc_error:
    rst error ; else
    defb integer_out_of_range ... br /> ld a, %00001111 ; ROM 0, VRAM1, RAM 7
    ROM 0)
    .endif

    chev chev October 2013 Development
  • Getting aquainted with the IF1bisToday, fifteen days after dispatch, the IF1bis arrived at my door. In perfect order. No customs, no TVA and no handling fee involved. The arrival of …

    ... ;HD_11, 23789
    RST 8
    DEFB #32 ... (191),A ; Xx SHD rom
    DEC HL < ...
    roko roko October 2013 Hardware
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... defs 96, 255 ; unused locations (ROM 0)
    .endif
    ... defs 75, 255 ; unused locations (ROM 0)
    .endif
    ... 0x2320
    circle:
    rst get_char ; get current character< ... ; error if not
    rst next_char ; next character
    ...
    chev chev October 2013 Development
  • z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…

    ... you don't run the ROM ISR, you'll never detect ... does not depend on the ROM code.

    Instead of ... there.

    The ROM ISR (rst 56) will reenable interrupts on ...
    Alcoholics Anonymous Alcoholics Anonymous October 2013 Development
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... ; return if so
    rst error ; else
    defb ... ; handle NEW 128
    rst error ; else
    defb ... (ROM 0)

    org 0x13e9
    new_128:
    rst start ... org 0x1408
    del_error:
    rst error ; else
    defb ...
    chev chev October 2013 Development
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... /> defs 21, 255 ; unused locations (ROM 0)
    .endif

    rst error ; and call
    defb ...
    chev chev November 2013 Development
  • Spectrum CP/MHello.. Just out of curiosity, has anyone actually used +3 CP/M for any practical purpose? I remember booting it up a couple of times years ago, jus…

    ... would be to use an RST instruction take the place of ... calls (the benefit of using RST to trigger this is that ... decode).[/QUOTE]

    Use RST 0 then. But you'll ... either need a custom ROM or a trap.
    chev chev November 2013 Sinclair Miscellaneous
  • Spectrum CP/MHello.. Just out of curiosity, has anyone actually used +3 CP/M for any practical purpose? I remember booting it up a couple of times years ago, jus…

    [QUOTE=aowen;737355]Use RST 0 then. But you'll either need a custom ROM or a trap.[/QUOTE]

    To do this kind of thing on a Spectrum compatible, that's pretty much a given :-)
    Winston Winston November 2013 Sinclair Miscellaneous
  • Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…

    ... 's snprintf and then the ROM to print the result.
    rst $10 ; forgive me, I'm a bit rusty with ROM code ...
    Alcoholics Anonymous Alcoholics Anonymous January 2014 Development
  • Outputting debug trace to RS232 (assembly)Hi Guys, I'm working on a game at the moment (written in assembly) but I am really needing to write out a debug trace of what is going on with the p…

    ... /infoseekid.cgi?id=2000371"]Shadow ROM Disassembly [/URL]

    in ... ]
    ld a, 'f'
    rst 0x8
    defb 0x1E
    guesser guesser January 2014 Development
  • Outputting debug trace to RS232 (assembly)Hi Guys, I'm working on a game at the moment (written in assembly) but I am really needing to write out a debug trace of what is going on with the p…

    ... are using the standard IF1 ROM and as the emulator will ... (at the ORG point). The RST 8 works, and IF1 pages ... but it crashes (RST 30 at 00BCh in IF1 ROM) and returns ...
    BloodBaz BloodBaz January 2014 Development
  • Outputting debug trace to RS232 (assembly)Hi Guys, I'm working on a game at the moment (written in assembly) but I am really needing to write out a debug trace of what is going on with the p…

    ... ]
    0x00BC in the IF1 ROM is the "START-4" routine ... calls[/QUOTE]

    The RST 08 call jumps to START ... returning from a IF1 main ROM call (it is not) and ... br /> START-4 performs the RST 30 to create the system ... isn't ready to calling ROM routines.
    BloodBaz BloodBaz January 2014 Development
  • Mercenary 1+2 CompendiumDear all users of +3 disks, I am an eager fan of Mercenary game, in which I made a good deal of progress years ago. I was looking for some standart …

    ... disk. Mercenary don't use ROM routines to save/load, so ... had a version that use ROM routines, patching it to save ...
    ld a,#18
    rst #20
    call #3C98
    Hood Hood February 2014 Games
  • Questions about Vortex Tracker II exported songsHi, I have been experimenting with Vortex Tracker II lately and have a couple of questions. By exporting the song to TAP format, a file is generated…

    ... ,bc,de,hl
    RST #38 ; ROM KBD SCAN if you need ...
    Jerri Jerri March 2014 Development
  • Creating your own BASIC-commands on IF1bisThe old Sinclair IF1 has offered an easy possibility to create your own new BASIC-command: The use of the shadow variable VECTOR. This is described i…

    ... as far as the Shadow ROM. The new commands start with ... call the Get char routine (RST 18?) Does the accumulator get ...
    rune rune March 2014 Hardware
<1…17181920212223…34>

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