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<1…20212223242526…34>
  • original DIVIDE and RESIDOSExist external interface with MB02 memory (512kB-1MB) memory. It's possible connect to ZX Spectrum before DIVIDE interface and used MB02 versions of …

    ... )
    BATTERY
    TRANSISTOR(for disable ROMCS)

    If MB02 ... detect if CPU access to rom area). System on DIVIDE can ...
    velesoft velesoft January 2009 Hardware
  • Machine code and Basic system variablesSpectrum system variables (I mean 48KB model) are essential for Basic. But what if I started my machine code program and it's never going to return t…

    ... somehow.

    If I disable interrupts with DI command, can ... you don't use any ROM call which might rely on ...
    rich_chandler rich_chandler January 2009 Sinclair Basic
  • Machine code and Basic system variablesSpectrum system variables (I mean 48KB model) are essential for Basic. But what if I started my machine code program and it's never going to return t…

    ... code program, but, you must disable interrupts or write your own ...

    - you cannot use ROM loader to load data into ...
    Ralf Ralf January 2009 Sinclair Basic
  • Understanding the StackSorry folks. I guess I'm going to be a pain for a little while. Hope it's ok with everyone. I'm currently studying the stack and wrote the little pr…

    ... (assuming you are not in ROM):
    [CODE]
    LD (END ... . This is commonly seen in ROM with RST commands, but you can ... 82 ; location of RET in ROM
    DEC SP
    DEC ...
    Patrik Rak Patrik Rak January 2009 Development
  • Understanding the StackSorry folks. I guess I'm going to be a pain for a little while. Hope it's ok with everyone. I'm currently studying the stack and wrote the little pr…

    ... and reset. Why? Because the ROM interrupt routine is still active ... another is:
    [CODE] di ; disable interrupts
    ld sp,stack ...
    evilpaul evilpaul January 2009 Development
  • Assembler snippetsI was just thinking that a thread for small but useful assembler snippets to do useful things would be cool for people learning z80 coding. Not to me…

    ... /> Intrupt must be enabled so ROM can set time.

    LD A,":" ; display seperator
    RST 16
    DEC HL ; goto ...
    Dr BEEP Dr BEEP January 2009 Development
  • Girlfriend's computerI'm on my girlfriends computer atm -- one which she has asked me to sort out. It is a Vista computer which has reportedly slowed down since she fir…

    ... Error Reporting tab
    Check Disable error reporting
    ***************************************************************
    Increasing ... longer access your
    CD ROM's, the following registry keys ...
    psj3809 psj3809 January 2009 Chit chat
  • Is the original divIDE compatible with Interface 1Is the original divIDE hardware compatible with Interface 1 ? I would like to use the divIDE and Microdrives connected at the same time. Is this pos…

    ... of ZX Interface 1 ? After RST 8 connect IF1 external eprom ... ?

    Divide connect external rom memory if CPU go to ... :
    #0000 = reset/rst 0
    #0008 = RST 8
    #0038 = IM1 ...
    velesoft velesoft January 2009 Hardware
  • How does the Speccy deal with the Character Set?Hi All, Can anyone spare a little time to explain to me the basic Assembly method of how the Speccy interprets and retrieves Characters to print on …

    ... asm method is to use RST 16. This is the Spectrum ... done.
    ret z
    rst 16 ; print the character
    ROM, and copy it to the ...
    Winston Winston February 2009 Development
  • DivIDE on Spectrum +3Hi all, Is it possible to use the DivIDE on the Spectrum +3 in 128K mode? I have the 'A' jumper set on the board, but my +3 resets into 48K mode wit…

    ... already page RAM into the ROM area, there's really no ... . DIVIDE detect only acces to rom area and connect external memory ... on ZX bus to +5V (disable rom)

    If ZX will ...
    velesoft velesoft February 2009 Hardware
  • +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…

    ... 128K commands. Therefore the same ROM is being used for interpretation ... with the standard 48K BASIC ROM (ROM3) since this gets ... actions when calling any standard ROM routine other than RST10, RST18 ... just use:

    [CODE]rst $28
    defw $0556[/CODE ...
    glancaster glancaster February 2009 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…

    ... commands. Therefore the same ROM is being used for ... />
    error trap RST 8
    preserve error states ... error states
    set ROM 1-Syntax (which will ... set ROM 1-BASIC on non ... br /> hand back to original RST 8 routine

    chev chev February 2009 Development
  • 2 commands in 1 lineHi all, this is my first post although I have visited the web site many times, and I find it great. English is not my mother tongue, so I will try to…

    ... there was room enough in ROM for all those new functions ... using the error handling routine (RST #8 ). I have been debugging ... help of The Complete Spectrum ROM Dissassembly and I think it ... /> SCF
    CALL $556
    RST 8
    DEFB 255
    rinconete rinconete March 2009 Sinclair Basic
  • 2 commands in 1 lineHi all, this is my first post although I have visited the web site many times, and I find it great. English is not my mother tongue, so I will try to…

    ... there was room enough in ROM for all those new functions ... single character tokens before the ROM checks syntax so BASIC is ... 3 characters.

    Using RST $08 seems OK.
    Geoff Geoff March 2009 Sinclair Basic
  • Detecting Spectrum modelsIs there any sure-fire way a program can detect the model of machine it's running on (48K, +, 128, +2, +2A, +3, clones) even when running in the 48K …

    ... table of 0xff in the ROM as has already been mentioned ... sloppy programming to me - why disable keyboard input on the title ...
    Fikee Fikee March 2009 Development
  • BSDOS 309 for MB02+ by DuskyI heard, there is a new version of BSDOS 309 for the MB02 disc interface coded by DUSKY (Nick: UB880D). I have three pieces of MB02 (including a prot…

    ... and contain more patches of RST points, NMI, Divide/Divide+/MB02 ... compatibility. One version of BS-ROM+BS-DOS is compatible with ...
    velesoft velesoft April 2009 Sinclair Miscellaneous
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... ; end printing if so
    rst 16 ; do the printing of ... /> The BASIC-interpreter in the ROM makes sure this is done ... then the printroutine from the ROM is used to print the ... character.
    The ROM-routine excepts the character to ...
    Dr BEEP Dr BEEP April 2009 Development
  • Need to read code start and length from a +3 diskso i can transfer them to my internal ZXMMC interface and my mind has died as to how to do it (i know how to for a tape) any help or a general kick i…

    ... back to the 48 BASIC ROM.
    ;
    finish:
    push ... /> ;
    ; TODO: Handle errors with RST 8 rather than returning them ...
    John Elliott John Elliott May 2009 Sinclair Miscellaneous
  • Which is the most technically accurate Spectrum Emulator?Ok, which is the most technically accurate Spectrum Emulator? Please don't just vote but give reasons why.

    ... (00-FF) ROM
    CB (00-FF) ROM
    CB ... (00-FF) ROM
    CB (00-FF) ROM
    CB ... DD CB (00-FF) ROM
    DD CB (00- ... /> | 4. Spin | 7/10 | 38/47 | 45/57 |
    | 5 ... . RealSpectrum | 6/10 | 38/47 | 44/57 |
    | 6 ...
    rich_chandler rich_chandler June 2009 Emulators
  • Which is the most technically accurate Spectrum Emulator?Ok, which is the most technically accurate Spectrum Emulator? Please don't just vote but give reasons why.

    ...
    DD CB (00-FF) ROM
    DD CB (00-FF ...
    FD CB (00-FF) ROM
    FD CB (00-FF ... /> CB (00-FF) 5+3 ROM
    CB (00-FF) 5 ... |
    | 6. RealSpectrum | 6/10 | 38/47 | 44/57 |
    | 7 ...
    Metalbrain Metalbrain June 2009 Emulators
  • Which is the most technically accurate Spectrum Emulator?Ok, which is the most technically accurate Spectrum Emulator? Please don't just vote but give reasons why.

    ...
    DD CB (00-FF) ROM
    DD CB (00-FF ...
    FD CB (00-FF) ROM
    FD CB (00-FF ... /> CB (00-FF) 5+3 ROM
    CB (00-FF) 5 ... |
    | 6. RealSpectrum | 6/10 | 38/47 | 44/57 |
    | 7 ...
    rich_chandler rich_chandler June 2009 Emulators
  • Interface One - New FunctionalityAs you may (or may not) be aware the Interface One is a pretty powerful piece of kit. One of it's greatest features is being able to easily extended …

    ... F_piend ;Exit
    fe1 RST calbas
    DEFW 7833 ; ... /> PUSH BC
    RST calbas
    DEFW 7833 ... a call in 48K Spectrum ROM
    jumpo DEFW ... the DEFW in 48K Spectrum ROM
    [/CODE]
    roko roko July 2009 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ...
    DEC D
    DI ; Disable interupts
    CALL &0562 ... border colour
    AND &38
    RRCA
    RRCA
    Jonathan Harston Jonathan Harston July 2009 Development
  • +3 Centronics port: How does it work?I've been trying to follow the code with Fuse's debugger and I can't see it writing anywhere except to port 0x1ffd. It also jumps through some fairly…

    ... routine from the +3 ROM 1. I've got ... 4 when BASIC is in ROM 1
    ; use ... ,20 when BASIC is in ROM 3
    di ;
    ROM 1
    ; use ... 4 when BASIC is in ROM 3
    out ( ... not pressed

    rst 08h ; error L
    defb ...
    chev chev July 2009 Hardware
  • divide plus back to life , preorderI have green light form authors to made DIVIDE PLUS, anybody interested? Promise from me , fully asembled and tested DIVIDE PLUS in plastic case. Qua…

    ... appreciated :-?[/QUOTE]

    +3E rom use only IDE ports, no ... computers with +3e rom must be on DivIDE disable memory (open jumper ... use DivIDE only with +3e rom, remove jumper JP2(E) + eeprom ...
    velesoft velesoft July 2009 Hardware
  • ANN: ResiDOS v2.25 and +3e ROMS v1.38 releasedA major new release of ResiDOS, v2.25, is now available! The most important new features are commands and functions allowing new extended streams an…

    ... mode with 16kB paging in rom area (similar as MB02+). Each ... must be replaced with RST #xx. On RST adress is OUT 227 ...
    velesoft velesoft July 2009 Hardware
  • ANN: ResiDOS v2.25 and +3e ROMS v1.38 releasedA major new release of ResiDOS, v2.25, is now available! The most important new features are commands and functions allowing new extended streams an…

    ... mode with 16kB paging in rom area (similar as MB02 ... be replaced with RST #xx. On RST adress is OUT ... [*]Initially, copy of BASIC ROM (eg RAM bank 0 for ... error, which causes a RST 8 (switch to ResiDOS ... obtain error code (embedded after RST 8 ).
    [*]ResiDOS ...
    glancaster glancaster July 2009 Hardware
<1…20212223242526…34>

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HitBox

Word Docs Hits
rst 1.2K 2.5K
38 2K 2.7K
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