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Search Again :: Adv Search 997 results in 0.001s
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  • sinclair watch on antiques road show:) and his radio also.. haaaw much ? next week I will be on it.. with my classic collection of cardboard covered sinclair releases.. none of that …

    I did used to have a pocket calculator collectors price guide book.
    thx1138 thx1138 September 2013 Chit chat
  • Returning to BASIC from asmI never had to do it till now but there is always the first time :) At machine code program start I preserved SP register and all the other ones. A…

    ... altered system variables, left the calculator stack unbalanced, overwritten items on ...
    Battle Bunny Battle Bunny September 2013 Development
  • iOS7 ReleasedGood news, we can all download Apples newest software today! :) Am trying to download and install for the iPhone & iPad, but Apples servers are rathe…

    ... address book, calendar, appointment scheduler, calculator, world time clock, games, electronic ...
    ADJB ADJB September 2013 Chit chat
  • New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…

    [QUOTE=Shaos;727047]Really? Is it a bug or feature? ;)
    Which address?[/QUOTE]

    It deliberately tries to write to #0000 during a calculator operation, and there's a bug where the screen scroll rolls over into #3FFF.
    chev chev October 2013 Hardware
  • New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…

    ... write to #0000 during a calculator operation, and there's a ...
    Shaos Shaos October 2013 Hardware
  • New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…

    [QUOTE=aowen;727061]It deliberately tries to write to #0000 during a calculator operation...[/QUOTE]

    Does it mean any basic math?
    Shaos Shaos October 2013 Hardware
  • New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…

    IIRC the Spectrums internal calculator uses address &0000 to ...
    1024MAK 1024MAK October 2013 Hardware
  • New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…

    [QUOTE=Shaos;727208]Does it mean any basic math?[/QUOTE]

    Had to look it up. It's the skip constants routine at #33F7. Overwrites the first five bytes of the ROM. Can contain any value at all. Gets called during calculator operations.
    chev chev October 2013 Hardware
  • SE BasicAfter 13 years of development I thought I'd run out of things to optimize, but it turns out I was wrong. However, I'm now running out of time to work…

    ... instruction set for its internal calculator which probably saves a heap ...
    chev chev October 2013 Sinclair Basic
  • 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…

    ... paging just to use the calculator.
    [quote]"48kers can try ...
    chev chev October 2013 Brand new software
  • Use PLAY without the 128 ROMHere's a little thing I wrote called SoftPLAY: [url]http://www.worldofspectrum.org/forums/showthread.php?t=45259[/url] Now you can use the PLAY comm…

    ... a timing value for the calculator loop that gives something closer ...
    chev chev October 2013 Sinclair Basic
  • 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…

    ... does use the floating point calculator.
    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…

    ... does use the floating point calculator.[/QUOTE]

    Then ok ... rom routines and floating point calculator (I must make some patches ...
    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…

    ... " ; version number

    ; THE 'CALCULATOR' RESTART
    org 0x0028
    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…

    [code]; --- THE PSG and LOUDSPEAKER ROUTINES ----------------------------------------

    ; THE 'SOUND' COMMAND
    org 0x0374
    sound_4:
    rst next_char ; advance pointer

    org 0x0375
    sound:
    call expt_2num ...
    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 /> call expt_exp ; parameter to calculator stack
    call syntax_z ; ... call use_zero ; put zero on calculator stack
    jr sa_code_2 ; immediate ... call use_zero ; put zero on calculator stack
    jr sa_code_4 ; immediate ...
    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…

    ... ; remove from
    fdel ; calculator
    fce ; stack
    push ... ; put on calculator stack
    fwait ; enter calculator
    fstk ... it
    fce ; exit calculator
    exx ; alternate register ...
    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…

    ... fetch_two ; get two numbers from calculator stack
    call shift_fp ; shift ... :
    call int_store ; result to calculator stack
    pop de ; stack ... fetch_two ; get two numbers from calculator stack
    ld a, b ...
    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…

    ... fetch_two ; get two numbers from calculator stack
    exx ; alternate register ... :
    call int_store ; result to calculator stack
    pop de ; stack ...
    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…

    ... /> call next_2num ; co-ords to calculator stack
    ; rst get_char ; ... br /> fce ; exit calculator
    call fp_to_bc ; calculator stack to BC
    fce ; exit calculator
    inc (hl) ; increment exponent ...
    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…

    ...
    fwait ; perform
    fsgl ; calculator
    fce ; operation
    jr ...
    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 /> call stk_sto_str ; store on calculator stack
    rst get_char ; ... destination pointer
    fwait ; enter calculator
    fdel ; reduce stack end ... by five
    fce ; exit calculator
    pop hl ; unstack ...
    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…

    ... dec_sto_1:
    fwait ; enter calculator
    fstk1 ; stack one in ... fdel ; remove from calculator stack
    fce ; exit calculator

    ... stack zero
    fce ; exit calculator
    pop af ; unstack ...
    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…

    ... /> inc de ; next position in calculator stack
    ldir ; copy literals ... /> inc de ; next position in calculator stack
    jr stk_zeros ; loop ... (n - 2)
    fce ; exit calculator
    ret ; end of subroutine ...
    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…

    ... /> call stk_sto_str ; parameters to calculator stack
    pop bc ; ... call stk_sto_str ; get parameters to calculator stack
    pop hl ; ... fstk0 ; zero
    fce ; exit calculator
    ret ; end of function ...
    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…

    ... ; atn x
    fce ; exit calculator
    ret ; end of subroutine ... = acs x
    fce ; exit calculator
    ret ; end of subroutineend ... br /> last:
    fce ; exit calculator
    ret ; end of subroutine ...
    chev chev October 2013 Development
  • I know it's part ZX81 but what's the rest of it?You can see the ZX81 motherboard in the corner but I have no idea what the rest does, it powers up but I haven't managed to get the screen to tune in…

    ... come with the f/p calculator division errors, plus the Sinclair ...
    moggy moggy October 2013 Hardware
  • I know it's part ZX81 but what's the rest of it?You can see the ZX81 motherboard in the corner but I have no idea what the rest does, it powers up but I haven't managed to get the screen to tune in…

    ... /> third post down (SG81_b.zip) calculator errors corrected and it's ...
    moggy moggy October 2013 Hardware
  • I know it's part ZX81 but what's the rest of it?You can see the ZX81 motherboard in the corner but I have no idea what the rest does, it powers up but I haven't managed to get the screen to tune in…

    ... /> third post down (SG81_b.zip) calculator errors corrected and it's ...
    youno youno 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…

    ... , stk_var ; parameters and variables to calculator
    bit 6, (iy + _flags ... if so
    fwait ; enter calculator
    fstk0 ; stack zero
    fce ; exit calculator
    ret ; end of subroutine ...
    chev chev October 2013 Development
<1…22232425262728…34>

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