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Search Again :: Adv Search 147 results in 0.000s
<12345>
  • Z80 RRCA instruction...Hi Folks, Well my exploration of Z80 MCODE continues apace! I am struggling to understand how the RRCA instruction works. The official Zilog manua…

    This is how to repeat a block of code 16 times in the Spin assembler.

    [code]
    REPT 16
    rl c
    rla
    adc hl, hl
    sbc hl, de
    jr nc, $+3
    add hl, de
    ENDR
    [/code]
    FrankT FrankT August 2010 Sinclair Basic
  • Macros in Z80 assemblerI don't know if the title of this post is good, so let me explain what I mean If have for example code [SIZE="1"]LDI LDI LDI LDI LDI[/SIZE] I can…

    You can do this in Pasmo. See the documentation for the REPT directive.
    Philip Kendall Philip Kendall January 2011 Development
  • Macros in Z80 assemblerI don't know if the title of this post is good, so let me explain what I mean If have for example code [SIZE="1"]LDI LDI LDI LDI LDI[/SIZE] I can…

    From elsewhere:

    rept times, variable name, initial value, ... /> .
    .
    endm

    REPT 5, var, 1, 1
    joefish joefish January 2011 Development
  • Assembly help: EQUCan anyone explain in duffers language the purpose of the EQU term in assembly? I found this info in another thread: EQU: Equate a name to a specif…

    ... throughout your code or within REPT loops:

    attr_table
    REPT 24, attr_row
    ATTR_ADDR EQU ( ... . within the context of a REPT macro? Any ordinary labels within ...
    joefish joefish April 2011 Development
  • Assembly help: EQUCan anyone explain in duffers language the purpose of the EQU term in assembly? I found this info in another thread: EQU: Equate a name to a specif…

    ... . within the context of a REPT macro? Any ordinary labels within ...
    Woody Woody April 2011 Development
  • Assembly help: EQUCan anyone explain in duffers language the purpose of the EQU term in assembly? I found this info in another thread: EQU: Equate a name to a specif…

    ... 22528

    attr_table
    REPT 24, attr_row
    ATTR_ADDR DEFL ...
    joefish joefish April 2011 Development
  • MCODE problem...Hi Folks, Trying to write a simple machine code program to hatch the screen. So far I have the following but even this is not working - it does not…

    ... de,&aaaa
    REPT 24
    REPT 128
    push hl ...
    obo obo October 2011 Development
  • Fastest way to mirror a byte?I.E. turning 01100000 into 00000110, in assembly. I'm trying but I suck at stuff with rotation and the carry bit. Any pointers?

    ... the right place:[code]
    REPT 256, x
    defb ((x ...
    obo obo October 2011 Development
  • Fastest way to mirror a byte?I.E. turning 01100000 into 00000110, in assembly. I'm trying but I suck at stuff with rotation and the carry bit. Any pointers?

    ... I might only use the REPT directive in Pasmo, rather than ...
    obo obo October 2011 Development
  • Fastest way to mirror a byte?I.E. turning 01100000 into 00000110, in assembly. I'm trying but I suck at stuff with rotation and the carry bit. Any pointers?

    ... I might only use the REPT directive in Pasmo, rather than ...
    antoniovillena antoniovillena October 2011 Development
  • Boulder Dash clonesI would like to determine all games in the archive that are not yet listed as clones of [URL="http://www.worldofspectrum.org/infoseek.cgi?regexp=%5EB…

    ... .co.uk/eug/64/a-rept.html[/url]
    Matt_B Matt_B December 2011 Games
  • Boulder Dash clonesI would like to determine all games in the archive that are not yet listed as clones of [URL="http://www.worldofspectrum.org/infoseek.cgi?regexp=%5EB…

    ... .co.uk/eug/64/a-rept.html[/url][/QUOTE]

    Wookiee Wookiee December 2011 Games
  • Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…

    ... /> ld (sp_cache), sp

    REPT 48, attr ; write the attributes ... blit
    ENDM

    REPT 3, chunk ; write the bitmap ...
    REPT 8, row
    REPT 8, cell
    REPT 2, line ...
    p13z p13z January 2012 Sinclair Miscellaneous
  • Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…

    ... write steps:

    [code]REPT 160, line
    ld sp ...
    obo obo January 2012 Sinclair Miscellaneous
  • Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…

    ... write steps:

    [code]REPT 160, line
    ld sp ...
    climacus climacus January 2012 Sinclair Miscellaneous
  • Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…

    ... ?t you?[/quote]
    The 'REPT 160' line is a Pasmo ...
    obo obo January 2012 Sinclair Miscellaneous
  • Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…

    [QUOTE=obo;595274]The 'REPT 160' line is a Pasmo ...
    climacus climacus January 2012 Sinclair Miscellaneous
  • 28-character wide multicolour(ish) on 48k SpectrumLong-time lurker here... I've always been interested in rainbow effects on the 48k Spectrum, mainly from a perspective of "Just what [I]would [/I]ha…

    ... poke different JPs here
    rept 257
    defb 253 ;interrupt ...
    R-Tape R-Tape April 2012 Development
  • Byte-order backbufferThis is a tool for Z80 coders who wish the Spectrum screen had a serial layout. It runs as an interrupt mode 2 service routine and uses POP and PUSH …

    ... /> ld (sp_cache), sp

    REPT 48, attr ; write the attributes ... blit
    ENDM

    REPT 3, chunk ; write the bitmap ...
    REPT 8, row
    REPT 8, cell
    REPT 2, line ...
    R-Tape R-Tape April 2012 Development
  • Moving a line down the display in assembler?...It's not a "[I]how can I do it[/I]" question, it's more a "am I missing something in trying to do it a new way" kinda question. What I've been doing…

    ... ;B-equal position

    REPT 2 ;4 bytes
    POP ...
    INC H

    REPT 3 ;6 bytes
    POP ...
    INC H

    REPT 3 ;6 bytes
    POP ...
    Ralf Ralf June 2012 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 …

    ... ,085
    ;
    string
    rept 3
    defb 1,1 ... 65024 ;vector address table
    REPT 257 ;jumps to RET at ...
    R-Tape R-Tape June 2012 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 …

    ... 65024 ;vector address table
    REPT 257 ;jumps to RET at ...
    R-Tape R-Tape June 2012 Development
  • BIFROST* ENGINE 1.2 released!Another improved version of the BIFROST* ENGINE is now available! Download it here: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0027405[/u…

    ...
    race_raster:
    REPT 18, ROWREPT
    REPT 8
    ld sp ...
    Gedlion Gedlion July 2012 Brand new software
  • BIFROST* ENGINE 1.2 released!Another improved version of the BIFROST* ENGINE is now available! Download it here: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0027405[/u…

    ... , just need to change [B]REPT 18, ROWREPT[/B] to the ...
    Einar Saukas Einar Saukas July 2012 Brand new software
  • BIFROST* ENGINE 1.2 released!Another improved version of the BIFROST* ENGINE is now available! Download it here: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0027405[/u…

    ... , just need to change [B]REPT 18, ROWREPT[/B] to the ...
    Gedlion Gedlion July 2012 Brand new software
  • 64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…

    ... 22528
    M3
    REPT 32
    LDI
    ... /> AttrBuffer1
    INCBIN
    REPT 256
    .BYTE 0
    AttrBuffer2
    INCBIN
    REPT 256
    .BYTE 0
    ;----------------
    ORG 65024
    REPT 257
    .BYTE 255
    Ralf Ralf July 2012 Development
  • 64x48 full colour graphicsHow feasible is this? Could an interrupt-driven routine be used to, for example, fill the top two thirds with a 64x32 blocky picture and leave the bo…

    ... /> LD DE,(CurrentLineStart)
    REPT 32
    LDI
    ... />
    AttrBuffer1
    REPT 192
    BYTE 71,70 ... br />
    AttrBuffer2
    REPT 192
    BYTE 13,19 ... /> ;----------------
    ORG 65024
    REPT 257
    .BYTE 255
    Ralf Ralf July 2012 Development
<12345>

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