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<1234567…34>
  • RST 16 with TASMCan any body tell me what is wong when I assemble this test code with TASM : ;print a long string "help me" start .org 32000 ld a,2 call 5633…

    ... ,(de)
    inc de
    RST 16
    jr loop
    RST 16

    Is it ...
    Steve(spt) Steve(spt) April 2004 Development
  • question about RST 10hhow do you set the position of the text when using 'RST 10h' to print to screen?

    how do you set the position of the text when using 'RST 10h' to print to screen?
    madvanman madvanman May 2007 Development
  • +3 BASIC and RST 8I've been working on adding commands to the BASIC interpreter, in a similar style to how Interface 1 does it (catch the RST 8 error trap). This works…

    ... 1 does it (catch the RST 8 error trap). This works ... 48k, a 128k (in either RST 0 or in the 128 ... under 48K BASIC or in RST 0 mode.

    But ...
    Winston Winston February 2009 Development
  • Using RST 16 and udg flickerHi there! I'm using UDGs and RST 16 to make a simple canyon bomber game. I've got the game mechanics working ( finally ) but now I'd like to make …

    ... /> I'm using UDGs and RST 16 to make a simple ...
    Atari_Jetman Atari_Jetman October 2012 Development
  • RST hooks in OpenSE BASICHi, any possibility of OpenSE BASIC having RST vectors rewired to a small table in RAM containing jumps back to apropriate ROM locations? :grin: It i…

    ... possibility of OpenSE BASIC having RST vectors rewired to a small ...
    tstih tstih May 2014 Development
  • Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…

    ... RST 0x0010 jumps to 0x10. Besides existing RST 0x00, RST 0x08, RST 0x10, RST 0x18, RST ... 0x20, RST 0x28, RST 0x30, and RST 0x38 ...
    0x002B RST 0x38
    0x002C RST 0x38
    0x002D RST 0x38
    tstih tstih July 2014 Development
  • Patching RST routines?Hi all, I am quite unexperienced regarding the Speccy and today I made another attempt to make a concept for a SymbOS port to this machine. There is…

    ... at #0000-#0040 for the RST commands?

    Is there ...
    Prodatron Prodatron December 2014 Development
  • Hook CodesIf you've dug into the Interface 1 this should be an easy question. I last had 'em circa 1990 while I can remember the things they did Start Motor C…

    ... a program

    Normally RST 8 handles exceptions eg
    RST 08
    DB 01 ;;produces " ... 2 Variable not found"
    RST 08
    DB 1A ;;produces ... error" (maybe, not certain)
    RST 08
    DB 1B ;;Starts ...
    john john February 2001 Sinclair Miscellaneous
  • ZX PC Interface : The manual, schematics and more info... ZX &lt;-> PC Interface ------------------- Contents 1) The ZX &lt;-> PC Interface 1.1) What is it? 1.2) What does it do? 2) Install…

    ... the ZX ROM.

    RST 8 is also altered, but ... from 1997. You can make RST 8 to call to your ...
    Dr BEEP Dr BEEP December 2002 Sinclair Miscellaneous
  • ZX PC InterfaceZX &lt;-> PC Interface Contents 1) The ZX &lt;-> PC Interface 1.1) What is it? 1.2) What does it do? 2) Installation 2.1) The softwa…

    ... saving to tape.

    RST 8 is also changed, but ... .
    You now can make RST 8 to call to your ...
    Dr BEEP Dr BEEP January 2003 Announcements
  • InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…

    ... ), the processor simply executes an RST 38 instruction if an interrupt ... (0xff), coincidentally the opcode for RST 38, so the Z80 will ... executed; if there is a RST n on the data bus ...
    Philip Kendall Philip Kendall July 2004 Development
  • The incredible shrinking screendumpIn this topic I stated that I would be impressed if the screendump could be smaller than 37 bytes. [url="http://www.worldofspectrum.org/forums/viewt…

    ... ) ; Fetch byte for print
    rst 16 ; Printing table and screen ...
    Dr BEEP Dr BEEP September 2004 Development
  • PRINT AT in assembler Hello everyone, I am very new to this forums. Like perhaps many others I had a Spectrum as a child and did pretty much simple BASIC programming, bu…

    ... />
    LD a,22
    RST 16
    LD a,10 ... (x-coord)
    RST 16
    LD a,20 ... (y-coord)
    RST 16
    LD a,65 ... (character code)
    RST 16

    I might ...
    Rickard Rickard July 2005 Development
  • Programming MC : first stepsIsn't nice to collect all kinds of short routines to help making the first steps into MC for everyone who never touched MC? What I mean is mostly th…

    ... a,"0" ; display number
    rst 16 ; with print
    ret ...
    Dr BEEP Dr BEEP August 2005 Development
  • MC TipPlace your MC tip here: Here is my first: When using alternate registers (EXX) the HL register must not be affected on return to BASIC. Also the IY…

    ... using ROM-routines (i.e. RST 16).
    or return to ...
    Dr BEEP Dr BEEP November 2005 Development
  • http://zx.pk.ru RST#38 (Russian Spectrum Talks)[url="http://zx.pk.ru"]http://zx.pk.ru[/url] is a biggest Russian forum for Speccy (has 750 Registered Users & 30 000 Messages). It's live discussion…

    [url="http://zx.pk.ru"]http://zx.pk.ru[/url] is a biggest Russian forum for Speccy (has 750 Registered Users & 30 000 Messages). It's live discussion about software, hardware (Russian clones), Emulation, latest releases on Speccy, and unique ...
    Ardo Ardo December 2005 Announcements
  • SPIN AssemblerAnybody got any idea why RST 10 doesn't work in SPIN's assembler?? Perhaps I'm putting the command in the wrong format. Cheers

    Anybody got any idea why RST 10 doesn't work in SPIN's assembler??

    Perhaps I'm putting the command in the wrong format.

    Cheers
    Saboteur Saboteur January 2006 Emulators
  • ROM paging questionAssuming the Spectrum 128 memory map and port addresses, but two custom ROMs in place of the normal Editor and BASIC, what is the most efficient way …

    ... ROM-0 will use a RST instruction (it doesn't matter ...
    chev chev January 2006 Development
  • FP Calc QuestionWhen using the FP Calc (RST 28h) to perform a subtraction how do you find out what the sign of the result is? ie. +/-. For example if I stack two va…

    When using the FP Calc (RST 28h) to perform a subtraction ...
    dmsmith dmsmith March 2006 Development
  • Rst #38This, as far as I know, is the ROM procedure that does the keyboard check. (and, at the same time, is what's being executed by interrupt in IM 1 mode…

    This, as far as I know, is the ROM procedure that does the keyboard check. (and, at the same time, is what's being executed by interrupt in IM 1 mode).
    It seems to write the last pressed key's code into #5C08.

    The problem is that ...
    S.9 S.9 November 2006 Development
  • Aggravating problem with screensI've rewritten my Sam C runtime emulator code ( well almost ) to allow me to use my own routines for blitting sprites onto the screen, storing tiles …

    ... your program calls ROM routines ( RST 16 and jump
    table ...
    DonkeyPong DonkeyPong January 2007 Development
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    ... ),a ; clear AT flag
    rst 08h ;
    defb $0a ;
    chev chev January 2007 Development
  • Monitor/debugger that doesn't use the Speccy ROM?Was there ever a Spectrum monitor/debugger released that didn't use the ROM, for key input and character output routines? The reason I ask is that i…

    ... appear to use the standard RST 10 for character output, but ...
    glancaster glancaster February 2007 Development
  • Currah MicroSource emulationIt appears to be impossible to emualte the MicroSource in software on the ZX Spectrum SE as hardware polling is required. The following patch is not …

    ... />
    ld hl,$33fb ; prevent RST 0H being overwritten
    ld ... /> ; simulate cold reset

    rst 0h ;

    ; MicroSource ROM ...
    chev chev March 2007 Emulators
  • Disassemblers and RSTsI think this is a longshot, but... is anybody aware of a disassembler that handles the Interface One RSTs? e.g. RST $10 DEFW $0020. Cheers

    I think this is a longshot, but... is anybody aware of a disassembler that handles the Interface One RSTs? e.g. RST $10 DEFW $0020.

    Cheers
    jp jp April 2007 Development
  • How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…

    ... any CALL to ROM or RST instructions in my own code ...
    Rickard Rickard May 2007 Development
  • Multiple ROMsI'm mulling over the idea of a bit of hardware with a ROM in it, which has some commands that can be called by BASIC (like the old wafadrive star com…

    ... that the hardware traps the RST 0x08 instruction, pages in its ...
    Winston Winston September 2007 Development
  • A vexatious questionThis is kind of a follow-up to a question about RST #8 and hardware that I wrote in the development forum a while ago. To summarize that: certain ha…

    ... off the edge connector traps RST #8. For instance, the ... in when it traps an RST #8 - presumably when ... only one device can handle RST #8, surely the only ... to trap something other than RST#8. (Does the DivIDE ... hardware jumper that disables RST#8 traps and instead ...
    Winston Winston October 2007 Hardware
<1234567…34>

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  • RST 16 with TASMCan any body tell me what is wong when I assemble this test code with TASM :<br /> <br /> ;print a long string "help me"<br /> start .org 32000<br…
  • http://zx.pk.ru RST#38 (Russian Spectrum Talks)[url="http://zx.pk.ru"]http://zx.pk.ru[/url] is a biggest Russian forum for Speccy (has 750 Registered Users &amp; 30 000 Messages). It's live discus…
  • Rst #38This, as far as I know, is the ROM procedure that does the keyboard check. (and, at the same time, is what's being executed by interrupt in IM 1 mode…
  • question about RST 10hhow do you set the position of the text when using 'RST 10h' to print to screen?
  • +3 BASIC and RST 8I've been working on adding commands to the BASIC interpreter, in a similar style to how Interface 1 does it (catch the RST 8 error trap). This works…
  • Using RST 16 and udg flickerHi there!<br /> <br /> I'm using UDGs and RST 16 to make a simple canyon bomber game. <br /> <br /> I've got the game mechanics working ( finally ) b…
  • RST hooks in OpenSE BASICHi,<br /> any possibility of OpenSE BASIC having RST vectors rewired to a small table in RAM containing jumps back to apropriate ROM locations? :grin…
  • Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…
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