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  • MAME on the Spectrum?Yes, I know it's currently AY's job to make ludicrous posts (a position he's filling in very well, until TKRAP returns), but just out of interest, if…

    ... replaced by a RST.
    In the 'ROM' the RST will read the ...
    Dr BEEP Dr BEEP May 2006 Emulators
  • OpenZXRom v2006-05-17 releasedJust knocked out a new release of OpenZXRom last night - a GPL licensed functional replacement for the original Spectrum ROM. [url]http://matt.west.…

    ... . Not surprising - probably not uses ROM calls :D .

    Project ... not based on original Speccy ROM.

    As for legal ... called ROM routines.
    First in list are of course RST-s ...
    piters piters June 2006 Development
  • Papaya Labs shop open for DivIDE pre-orders.Papaya Labs are now taking pre-orders for DivIDE interfaces and other DivIDE accessories. Find their shop at [url]http://www.papayalabs.co.uk/shop/[…

    ... ) instructions by RST XX and RST handler in shadow ROM would then serve ...
    baze baze August 2006 Hardware
  • Sinclair Basic Vs PascalWith the rise of the structured programming movement (Jackson et al) was it wise to put the Basic programming language into the Spectrum. By this ti…

    ... not going to utilise the ROM routines (and thus lose the ... /> Even if using lot of ROM calls MC is much faster ... , command interpreting etc. Print via RST 16 is one of rare ...
    piters piters September 2006 Sinclair Miscellaneous
  • Floating point representationI'm planning on picking up the [url=http://matt.west.co.tt/category/spectrum/openzxrom/]OpenZXRom[/url] project from where I left off a few months ba…

    ... Wm
    1.70?10^38 = 227 9.6 40 2 ... .

    3.40?10^38 = 227 7.2 32 2 ... idea to replace the original ROM format with a new FP ...
    rtunes rtunes October 2006 Development
  • TS2068 - SPECTRUM 48k Compatible Games ListHey guys... Follows the list. These are just the games I tested, there is still a long way ahead... As soon as more games are tested, their names w…

    ... made use of the ROM directly, aside from RST#10 for quick ...
    Alcoholics Anonymous Alcoholics Anonymous December 2006 Games
  • Small C on Sam help neededI'm trying to make good on some of my old developments that fell by the wayside and one of them uses Small C. The reason I stopped was down to not h…

    ... attached to your program calls ROM routines ( RST 16 and jump table ...
    DonkeyPong DonkeyPong December 2006 Development
  • Syntax checkingI want to capture the command for i.e. microdrive in a standard ROM. The editor will give an error, but how can I redirect to my own routine? I will …

    ... ROM here
    [code]
    #1cdb JP mycode

    mycode rst ... tape command
    loop1 rst #20
    cp ... ; reached
    loop2 rst #20
    cp ";"< ... all until 2nd ;
    rst #20 ; step over ;< ...
    Dr BEEP Dr BEEP January 2007 Development
  • Syntax checkingI want to capture the command for i.e. microdrive in a standard ROM. The editor will give an error, but how can I redirect to my own routine? I will …

    ... ROM here
    [code]
    #1cdb JP mycode

    mycode rst ... /> ld b,2
    loop1 rst #20
    jp z,#0605 ... /> djnz loop1 ; search second ;
    rst #20 ; step over ;
    jp ...
    Dr BEEP Dr BEEP January 2007 Development
  • Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…

    ... ? The examples in the spectrum rom seem to use the register ... hl
    push hl
    rst #10
    pop hl
    ROM 3 and RAM 0, and ...
    Alcoholics Anonymous Alcoholics Anonymous 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…

    ... that didn't use the ROM, for key input and character ... appear to use the standard RST 10 for character output, but ... may also not use the ROM routines since they are not ...
    DEATH DEATH February 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…

    ... ) I set breakpoints on the RST commands, and they didn't ... 's not to say the ROM isn't used, but as ...
    icabod icabod February 2007 Development
  • Learning z80 assembly - useful linksI'm starting here: [url]http://cobb.host.sk/z80guide/index.htm[/url] Anyone got any other great links?

    ... br /> MC LESSON - Fred 10 - ROM Routines/Maths
    MC LESSON ... - Fred 11a - ROM Routines/Vector
    MC LESSON ... /> MC LESSON - Fred 21 - ROM Routines, FPC, Vectors, DOS
    MC LESSON - Fred 38 - Driver

    MC TUTOR ...
    DonkeyPong DonkeyPong February 2007 Development
  • 16k Spectrum.How come emulator's in 16k mode don't provide 32 ram-pack support.

    ... RST 0 for passing control to/from the Speccy ROM. The MicroSource ROM ... />
    Yeah, I noticed the ROM file was actually a tape ...
    Woody Woody March 2007 Emulators
  • Galaksija emulator for ZX Spectrum +3/+2A(black)This is a NEW program/utility/game pack for ZX Spectrum. It is basically an emulator of an ex-Yugoslav computer "Galaksija" which is also Z80 based. …

    ... , I thought you were using RST patches on special cases, with ... some routines in the ZX81 ROM are patched witch non-existing ... . If I would patch with RST I must use an Eprom ...
    Dr BEEP Dr BEEP March 2007 Emulators
  • 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 …

    ... /> So you are dropping an RST 0H into the trip point ... related to the fact that RST 0H will push the program ... by the RST 0H instruction). Your return to BASIC ROM code could ... ;s first 8 bytes of ROM?

    [b]I stll ...
    BloodBaz BloodBaz March 2007 Emulators
  • 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 …

    ... you trace it from the RST 0 with a debugger.
    ROM, so it's ideal for ...
    glancaster glancaster March 2007 Emulators
  • 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 …

    ... patch both the BASIC ROM and the MicroSource ROM. I worry relocating ... in place a JP or RST instruction) will cause problems if ... be, particularly for the MicroSource ROM which is a bit of ...
    BloodBaz BloodBaz March 2007 Emulators
  • 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 …

    ... standard PRINT functionality from the ROM (RST, channels, etc.) as well ... which basically 1) pages BASIC ROM in, 2) calls an ... address in ROM, 3) pages MicroSource ROM back in, 4 ... then calling the predetermined BASIC ROM address with the MicroSource ...
    BloodBaz BloodBaz March 2007 Emulators
  • Total amount of memory on a Speccy ?I wonder............ The C64 (excuse me for saying that name in here. I'll hereby name it just "it") has 64k, while only 38k, or so, is available f…

    ... also has 64K - 16K as ROM, which you can't change ... itself or using routines like RST 16 from machine code), and ...
    Winston Winston March 2007 Hardware
  • Multiface ResidentI'm thinking about adapting some existing code to be Multiface "resident"... but being perfectly honest I'm not quite sure where to start. Any top t…

    ... hl
    ld (hl),199 ;rst 0
    ;RET to BASIC ... 'in a,(95)'

    rst 0; and reset
    [/code ... remember if your code uses ROM routines you'll have to ... routine or copy/modify the ROM routine into the RAM with ...
    Mr. Anonymous Mr. Anonymous March 2007 Development
  • GrrrThere's nothing more annoying than finding out that you've managed to bridge /RAS and A3 on the bank of 4116s while putting in sockets. Naturally, th…

    ... then run the memory test ROM on them.

    The ... crashed - it was showing the RST 8 crash dump - and then ... using it as a flash ROM programmer! That turned out to ... tomorrow... I programmed a new ROM 'blind', since the LCD is ...
    Winston Winston April 2007 Hardware
  • +2b not working with interface1i was trying to transfer some of my programs from my microdrive carts onto tapes last night, but found both my 48k and my toast rack 128K have decide…

    ... handled there. If via RST #08 in 48k ROM, it will be ...
    Sonic Sonic May 2007 Hardware
  • 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…

    ... doing any CALL to ROM or RST instructions in my own ... address 0x38 = 56 in the ROM.

    So ... made. That's the ROM routine for scanning the ... or with routines in the ROM code?
    [/quote]
    ROM code polls the keyboard in ...
    Alcoholics Anonymous Alcoholics Anonymous May 2007 Development
  • How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…

    ... /> LD A,32
    LOOP RST #10
    DJNZ LOOP
    ; The ROM routine gets the line start ...
    hldswrth hldswrth July 2007 Development
  • He's back......and he's got a new trick! AY Chip here. I've been away far too long. I would like to announce 'HatStand': for no adequately explored reason, I h…

    ... an interrupt, yes? And the ROM scans the keyboard, from a ... the interrupt should trigger a RST 38h, and not one of ...
    Where's that AY chip gone... Where's that AY chip gone... August 2007 Chit chat
  • He's back......and he's got a new trick! AY Chip here. I've been away far too long. I would like to announce 'HatStand': for no adequately explored reason, I h…

    ... an interrupt, yes? And the ROM scans the keyboard, from a ... the interrupt should trigger a RST 38h, and not one of ...
    Winston Winston September 2007 Chit chat
  • 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…

    ... try to page its own ROM in (even when PC ... on all of these uses RST 8 for all functionality, and ... want to use some IF1 ROM commands (eg for Microdrive ... temporarily disable the divIDE+ etc ROM, do that and then re ... -enable the ROM.

    So, if ...
    glancaster glancaster September 2007 Development
  • IY RegisterIve got a really bizarre bug, and I have only just started using the IY register. I seem to remember reading somewhere in a programming book, to neve…

    When your code uses ROM-routines (i.e. RST 16 for print)
    then the real value of IY is needed for correct handling.

    Best is not to use IY or only when not calling ANY ROM routines
    Dr BEEP Dr BEEP September 2007 Development
<1…13141516171819…34>

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