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<1…28293031323334>
  • Assembly OUT commandHello, im trying to send a signal to the output using this command. LD A,2 OUT (0FEh),A ---> This will set the border colour to RED The problem i…

    ... b, 200
    loop1:
    xor a
    out (254), a ...
    Shiru Shiru May 2010 Development
  • Assembly OUT commandHello, im trying to send a signal to the output using this command. LD A,2 OUT (0FEh),A ---> This will set the border colour to RED The problem i…

    ... b, 200
    loop1:
    xor a
    out (254), a ...
    Rosebud_ Rosebud_ May 2010 Development
  • How to read +3BASIC program in PC ?Is it possible to see the +3BASIC file content in the pc with some editor ?. I used a HEX editor and i saw that the program is there but converted to…

    ...
    to read again because erase all or resets to zero ...
    zx_if1 zx_if1 June 2010 Sinclair Basic
  • Some ROM/EPROM questions...I've got a ZX Spectrum +, a +2A and +3 computers, and I've been using +3e project ROMS for a while in my +3. I was thinking about using an EEPROM or…

    ... . Unfortunately, datasheet mentions 14V for erase, and 12V for programming - maybe ...
    RetroTechie RetroTechie June 2010 Hardware
  • How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…

    ... . 8 bytes in memory
    xor a ;first line into A ...
    Shiru Shiru June 2010 Sinclair Basic
  • How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…

    ... . 8 bytes in memory
    xor a ;first line into A ...
    arfgh arfgh June 2010 Sinclair Basic
  • How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…

    ... . 8 bytes in memory
    xor a ;first line into A ... . 8 bytes in memory
    xor a ;first line into A ...
    arfgh arfgh June 2010 Sinclair Basic
  • How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…

    ... . 8 bytes in memory
    xor a ;first line into A ...
    arfgh arfgh June 2010 Sinclair Basic
  • How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…

    ... /> ld de,address+8
    xor a
    ld b,8 ...
    Shiru Shiru June 2010 Sinclair Basic
  • Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …

    ... (hl),#80 ;left edge
    xor a
    inc l
    Shiru Shiru June 2010 Sinclair Basic
  • 'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…

    [QUOTE=Winston;448233]

    It's amazing how many ways there are to write a null-terminated string print routine :)

    [/QUOTE]

    [code]
    xor a
    or (hl)
    ret z
    rst 16
    [/code]
    Dr BEEP Dr BEEP June 2010 Sinclair Basic
  • My 1st CPLD project using the Xilinx XC9536Title says it all - for those of you who are considering the use of a CPLD or FPGA (programmable logic) in your electronics ventures, I've documented…

    ... . That is: able to identify / erase / program device etc. No other ...
    RetroTechie RetroTechie June 2010 Hardware
  • Obfuscated code ideaThe instructions [b]SUB A[/b] and [b]XOR A[/b] both have the effect of setting the accumulator to zero. The only difference between them is that [b]…

    ... ] sets BC = 2, while [code]XOR A
    PUSH AF

    XOR r sets the flags to ... SZ503P00, so XOR A will set Z (A ...
    Jonathan Harston Jonathan Harston June 2010 Development
  • Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …

    ... (hl),#80 ;left edge
    xor a
    inc l
    Shiru Shiru June 2010 Sinclair Basic
  • zxs v0.2 releasedI have released v0.2 of zxs if anyone is interested, judging by the response to the first release, I'd say not, but I'm gonna do it anyway!. It has h…

    ... grief than you're anticipating. "XOR A : IN A,($FE) : AND ...
    ccowley ccowley June 2010 Emulators
  • zxs v0.2 releasedI have released v0.2 of zxs if anyone is interested, judging by the response to the first release, I'd say not, but I'm gonna do it anyway!. It has h…

    ... grief than you're anticipating. "XOR A : IN A,($FE) : AND ...
    alien8r33d alien8r33d June 2010 Emulators
  • KING OF PONG: Pong revisitedHello everybody. I'm proud to announce you that my last personal project for the ZX Spectrum, "KING OF PONG" is available to download here at WOS si…

    ... )
    jr nc,aaa
    xor a


    aaa ...
    Bandit Bandit June 2010 Development
  • Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …

    ... ( LD (HL),A ) you might XOR the the ATTRs: LD A ... ,n, XOR A,(HL), LD (HL),A ...
    roko roko June 2010 Sinclair Basic
  • Arkos TrackerHi all, I'm proud to present you my Windows-based Tracker : Arkos Tracker, for you to compose for Spectrum, CPC and MSX. It requires .NET 3.5 at lea…

    ... + 3 ; play song

    xor a
    out (&FE ...
    SyX SyX June 2010 Development
  • Beepola v1.01A new version of Beepoa, v1.01, is now available for download from:- [URL]http://freestuff.grok.co.uk/beepola/Beepola_v1.01.00.zip[/URL] (650KiB) …

    ... HL

    CheckKey:
    xor a
    in a, ($fe ...
    kgmcneil kgmcneil June 2010 Announcements
  • Sprite MaskingI was looking at the sprites in some games, and noticed they have sprite followed by mask. Usually a row at a time (so the mask is sort of interleave…

    ... ".

    If you use XOR with either AND or OR ...
    ajmoss ajmoss June 2010 Development
  • "Programming the Spectrum in Assembly" series in Micro MartI see that Shaun Bebbington is starting a series of articles in Micro Mart magazine on how to program in assembly for those who might know a little b…

    ... />
    [code]
    halt
    xor a
    ld b,a ...
    Metalbrain Metalbrain June 2010 Sinclair Miscellaneous
  • Sprite RotatingI was looking (actually at Everyone's a Wally), and noticed that all the graphics for the main characters are left facing, and two characters wide. …

    ... of sprite is unmirrored
    xor a
    loop
    ld ...
    ld d, mirror_table
    xor a
    loop
    ld ...
    Fikee Fikee June 2010 Development
  • England vs Slovenia World Cup 2010 (23/6/10 3.00pm K.O)So then, who's bosses are letting them watch the football game this Wednesday coming???

    ... players have a chance to erase all the mess the last ...
    psj3809 psj3809 June 2010 Chit chat
  • +3e ROMs in AT28C256I've been thinking about loading the +3e ROMs in a E2PROM (AT28C256) to make the upgrades easier. It seems that is TTL compatible, and it takes +5v V…

    ... that needs >5V for erase/program, is programming it in ...
    RetroTechie RetroTechie June 2010 Hardware
  • +3e ROMs in AT28C256I've been thinking about loading the +3e ROMs in a E2PROM (AT28C256) to make the upgrades easier. It seems that is TTL compatible, and it takes +5v V…

    ... versions without using UV to erase them (I don't own ...
    Zup Zup June 2010 Hardware
<1…28293031323334>

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