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<1…15161718192021…34>
  • Loading BASIC programs stored as "bytes:"Hi all, I have a question regarding loading BASIC programs, that I managed to save as machine code (I suppose) when I was a child, as a result of e…

    ... ),a ; allow lower screen
    rst 8 ; return with error to ...
    Dr BEEP Dr BEEP October 2010 Development
  • Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…

    ... GND
    6
    7 RST
    8 CTS
    9 ...
    ASM ASM October 2010 Hardware
  • Print text in assemblyHello, a perhaps simple question: I would like to print a text string on the screen and I wonder how to do that in the most easy way? I seem to re…

    ... kind of ROM based code, RST 16 (?), but can that print ... 255
    ret z
    rst 16
    inc hl
    Dr BEEP Dr BEEP October 2010 Development
  • Print text in assemblyHello, a perhaps simple question: I would like to print a text string on the screen and I wonder how to do that in the most easy way? I seem to re…

    RST 16 only prints the single ...
    gasman gasman October 2010 Development
  • Do ULAs die?Thought I'd start this thread as people often think their ULA is dead, when it's actually the RAM or power circuits. Searching the forum in the futur…

    [QUOTE=RST#08;485512]It?s (only ...
    csmith csmith October 2010 Hardware
  • Optimization for this codeHello, I have done and submitted a small program for the CSS Crap Game Compo which involves a machine code routine. The z80 with BASIC and MC is av…

    ... 255
    ret z
    rst 16
    inc hl
    FrankT FrankT October 2010 Development
  • Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…

    ... height sizes

    00 RST SPR PF0 PF1 PF2
    01 RST PF0 SPR PF1 PF2
    10 RST PF0 PF1 SPR PF2
    11 RST PF0 PF1 PF2 SPR
    ASM ASM October 2010 Development
  • Printer Printing Problem (assembler)I've a program that outputs to the lower screen at various places, using a combination of calls to RST $10 plus OUT-NUM-1 and PR-STRING. It also call…

    Show us your code.

    The call channel routine is OK, but do you use the RST 16 to (L)PRINT?
    Dr BEEP Dr BEEP November 2010 Development
  • Printer Printing Problem (assembler)I've a program that outputs to the lower screen at various places, using a combination of calls to RST $10 plus OUT-NUM-1 and PR-STRING. It also call…

    ... : ld a,$16 ;AT
    rst $10
    xor a ;0 ...
    rst $10
    ld a,24 ... ;24
    rst $10
    ld b,0 ...
    Battle Bunny Battle Bunny November 2010 Development
  • Printer Printing Problem (assembler)I've a program that outputs to the lower screen at various places, using a combination of calls to RST $10 plus OUT-NUM-1 and PR-STRING. It also call…

    ... : ld a,$16 ;AT
    rst $10
    xor a ;0 ...
    rst $10
    ld a,24 ... ;24
    rst $10
    ld b,0 ...
    Dr BEEP Dr BEEP November 2010 Development
  • 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

    ... ; Jump if loaded OK
    rst $08 ; Report error and return ... ; Load the BASIC block
    rst $08 ; Report 'error' and return ...
    stefrobb stefrobb November 2010 Sinclair Basic
  • 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

    ... ; Jump if loaded OK
    rst $08 ; Report error and return ... char code in A
    rst $10 ; Print it
    djnz ... ; Load the BASIC block
    rst $08 ; Report 'error' and return ...
    stefrobb stefrobb November 2010 Sinclair Basic
  • Programming flash eprom on DIVIDE+Can you test it on DIVIDE PLUS ? [url]http://velesoft.speccy.cz/other/flasher-divide-plus.zip[/url] (This flash utility is WINSTON's flasher for dia…

    ... )
    OUT (23),A
    RST 0 ;software reset

    velesoft velesoft November 2010 Hardware
  • Schools shut due to snowGoing to be finding out in a bit if my two older daughter's schools are closed due to the snow... but WTF?? My school remained open in 1987/8 when w…

    [QUOTE=RST#08;495703]

    Frankly, ...
    psj3809 psj3809 December 2010 Chit chat
  • 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…

    [QUOTE=RST#08;499314]It's interesting, ...
    chev chev December 2010 Hardware
  • 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…

    ... that was invoked on a RST 28H instruction to replace the ...
    chev chev December 2010 Hardware
  • 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…

    ... that was invoked on a RST 28H instruction to replace the ...
    Rebelstar Rebelstar December 2010 Hardware
  • 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…

    ... routines are called using the RST 28 instruction to invoke the ... example:

    [code]
    RST 28H ;; FP-CALC add step ... an FPGA, because when the RST 28H instruction is read, instead ...
    chev chev December 2010 Hardware
  • 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…

    ... an FPGA, because when the RST 28H instruction is read, instead ... the Z80 from fetching the RST 28. (There's some more ...
    Winston Winston December 2010 Hardware
  • Powering up a Speccy after long-term storage.Staying at my folks for Christmas. Feels good to be back in God's country again, even if it is -12C outside at the moment. :-o Anyway, I was plannin…

    [QUOTE=RST#08;500419]I'd certainly ...
    RetroTechie RetroTechie December 2010 Hardware
  • Supertest 128 - Loader QuestionI wonder if someone could explain (in simple terms please) :) , the purpose of the switch code. I see what is doing (going to 48k mode via spectrum)…

    ... )
    ld iy,(OLDIY)
    rst 8
    errno: defb 0 ...
    John Elliott John Elliott January 2011 Games
  • Is this a ZX spectrum 16k or 48k?Hi! Just wondering if anyone know how much memory it is in this ZX spectrum, the seller doesn't know, I have a picture of it, the serial number is: D…

    [QUOTE=RST#08;503645]The 16K and 48K model were launched at the same time.[/QUOTE]

    I seem to remember the 16K model was released about 6/8 months before the 48K model.
    TriadDevelopments TriadDevelopments January 2011 Sinclair Miscellaneous
  • Z80 Processor Interupt helpHi everyone, Currently designing a Z80 computer and i need a little help with these interupts. If i have an I/O device that sends a pulse to the int…

    ... normally, it will be a RST instruction, which is actually a ...
    mcleod_ideafix mcleod_ideafix January 2011 Hardware
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ...
    .org 0x0000 ; rst 0x00
    di ; disable ... />
    .org 0x0028 ; rst 0x28 = fp emulator
    reti ... />
    .org 0x0030 ; rst 0x30 = debugger
    reti

    .org 0x0038 ; rst 0x38 = executive
    jp executive ...
    tstih tstih January 2011 Development
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ... similar to IF1 calls using RST) to provide heap services to ...
    tstih tstih January 2011 Development
  • Are these capacitors the right ones?Issue 3 board [URL="http://cgi.ebay.co.uk/16V-100uF-105-C-electrolytic-radial-Capacitor-X-10pcs-/120526193275?pt=UK_BOI_Electrical_Components_Supplie…

    ... at Maplin...

    [QUOTE=RST#08;511023](e.g. 25p ...
    joefish joefish February 2011 Hardware
<1…15161718192021…34>

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