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<1…21222324252627…34>
  • Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…

    ... br /> LD C,3d ; Counter 2 (FOR B) 0E03
    DEC D ; Decrement counter 3 15
    JR ... br /> DEC C ; Decrement counter 2 0D
    JR ... /> DEC B ; Decrement counter 1 05
    JR ... br /> This is what the program looks like - sorry I cannot ...
    Paddy Coleman Paddy Coleman August 2010 Sinclair Basic
  • Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…

    ...
    LD C,3d ; Counter 2 (FOR B) 0E03
    DEC D ; Decrement counter 3 15
    JR ... br /> DEC C ; Decrement counter 2 0D
    JR NZ ... br /> DEC B ; Decrement counter 1 05
    JR NZ ... /> This is what the program looks like - sorry I ...
    Fikee Fikee August 2010 Sinclair Basic
  • Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…

    ... 130 LD B,8d ; Counter 1 (FOR C) 0608
    counter 3 15
    190 JR ... 240 DEC C ; Decrement counter 2 0D
    250 JR ... 340 DEC B ; Decrement counter 1 05
    350 JR ... quick compared to the BASIC program:

    BASIC - ...
    Paddy Coleman Paddy Coleman August 2010 Sinclair Basic
  • Beebs Back in Education AgainBletchley Park Museum of Computing is running classes for A-Level students in computing using old BBC-Bs: [URL="http://www.bbc.co.uk/news/technology-…

    ... "putc(12)" in a C program that outputs to a terminal ... on a Speccy using the z88dk.
    Winston Winston August 2010 Chit chat
  • logical operators and the calculator stackI was wondering if there was a utility which would provide the list of commands needed for the ROM calculator to evaluate a logical expression. For e…

    ... /> ;------------------------------------------------------------------------------
    ld bc,LenExpr ;Byte counter for my expression string.
    program, I don't think it ...
    mcleod_ideafix mcleod_ideafix September 2010 Development
  • Help! Reverse engineering a Spectrum game[deleted]

    ... to begin with a basic program library shell when starting ... custom parts of the previous program are mainly thrown away ... loader with protection and tape counter
    02 - Hires colour ... reward greater than seing your program complete and functional!!!
    < ...
    ASM ASM October 2010 Development
  • Help! Reverse engineering a Spectrum game[deleted]

    ... activities such as increment a counter or return the number of ... out divide from a computer program as complex as a game ... help trace bugs in your program. It also allows you to ... monitor variables, program modes/flags and other information ...
    ASM ASM October 2010 Development
  • Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…

    ... I have SJasmplus, Pasmo and Z88dk installed. I have them all ... your program.

    On Linux I used Vim and z88dk and ... out using C yet via Z88dk. Just because I'm competent ...
    kilauea kilauea November 2010 Development
  • How do you have your speccy stuff organised on the PC?I'm curious as to how the good folks in here have their PC speccy stuff organised. For instance, do you have a single Programs folder with all your…

    ... eventually get finished.

    Z88dk has its own folder, and ... "z88dk\bin" with the exception of BASin, which resides in "Program Files ...
    Matt_B Matt_B November 2010 Games
  • Oscilloscope Speccy ProgramHi all, I remember very well in the old days when my Speccy was my single computer (around 1992) that I have had an oscilloscope software. This uses…

    ... used for a Y-coord counter keeps jumping suddenly in value ... of incrementing. I ran the program in Fuse using the same ...
    Battle Bunny Battle Bunny November 2010 Sinclair Miscellaneous
  • Oscilloscope Speccy ProgramHi all, I remember very well in the old days when my Speccy was my single computer (around 1992) that I have had an oscilloscope software. This uses…

    ... loop. If I start the program before I start the tape ... the program data starts, which can crash it. If the loop counter ...
    Battle Bunny Battle Bunny November 2010 Sinclair Miscellaneous
  • Oscilloscope Speccy ProgramHi all, I remember very well in the old days when my Speccy was my single computer (around 1992) that I have had an oscilloscope software. This uses…

    ... obscure bug in that emulator program (as it's usually quite ... signal peaks causing the loop counter providing the Y-coord for ...
    Battle Bunny Battle Bunny December 2010 Sinclair Miscellaneous
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... ?

    [url]http://www.z88dk.org/wiki/doku.php?id ... make use of the special z88dk keywords return_c() and return_nc() to ... know how much memory my program will use. The trick that ...
    Timmy Timmy December 2010 Development
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... ?

    [url]http://www.z88dk.org/wiki/doku.php?id ... know how much memory my program will use. The trick that ...
    Digital Prawn Digital Prawn December 2010 Development
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... and many of the z88dk libraries were written to ... the code in the z88dk libraries I was involved ... is returned) which effectively halts program execution, but it may ... for [URL="http://z88dk.cvs.sourceforge.net/viewvc/z88dk/z88dk/libsrc/sprites/software ...
    Alcoholics Anonymous Alcoholics Anonymous December 2010 Development
  • New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…

    ... up by the compiled C program. (The game engine).

    Z88DK system. If I change the ... know from other people's Z88DK games, that typically many more ...
    Digital Prawn Digital Prawn December 2010 Brand new software
  • New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…

    ... mask" state from the SevenUP program. i.e. All "ones" are ... bit_fx() routines supplied with the Z88DK system, so thanks due to ...
    Digital Prawn Digital Prawn December 2010 Brand new software
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... . This would mean the program could only print character codes ... way trip to your own program).

    2. Suitable ... the [URL="http://z88dk.cvs.sourceforge.net/viewvc/z88dk/z88dk/libsrc/sprites/software ... going to depend on your program. The C startup is ...
    Alcoholics Anonymous Alcoholics Anonymous December 2010 Development
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... -byte. This would mean the program could only print character codes ... 'm not making the perfect program. And it still has 25 ... interesting for everyone who uses z88dk, but for me (and probably ... fact, I chose to use z88dk because of the excellent sp1 ...
    Timmy Timmy December 2010 Development
  • New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…

    ... discovered the "Beepola" music composer program for Windows, which I'd ... () sound routines from the supplied Z88DK library which use the BORDCR ...
    Digital Prawn Digital Prawn January 2011 Brand new software
  • Official CSSCGC 2010 Competition ThreadDear Wossers, As 'loser' of the 2009 competition, I am now obliged to host the 2010 competition. I have created a site which will provide a hub for …

    ... of clumsily fighting with overlong program lines in the 128K BASIC ... remotely know how to use Z88DK back in those days - don ... I'd ever write a program in that way again! :D ...
    Digital Prawn Digital Prawn January 2011 Games
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ... stack. Starting up such a program would be as simple as ... switch (state is on the program's stack include initial register ... allocator [URL="http://z88dk.cvs.sourceforge.net/viewvc/z88dk/z88dk/libsrc/malloc/HeapAlloc_callee ...
    Alcoholics Anonymous Alcoholics Anonymous January 2011 Development
  • yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…

    ... and relocatable code generation from z88dk/sdcc as suggested because I ... some other things that single program need not care about but ...
    tstih tstih February 2011 Development
  • T/S 2068 & SpectrumBorrowing what you see below from the Timex Sinclair 2068 Beginner/Intermediate Guide, by Fred Blechman. It appears the T/s 2068 was intended to be …

    ... ]

    6) A geography program from Portugal for the TC2048 ... :

    [url]http://zxu4.z88dk.org/screenshots/[/url]
    chev chev April 2011 Hardware
  • Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…

    ... *always* prove fruitless as the program thinks it's a terminal ... a chest of drawers, the program now thinks it can assign ... password (collected lift inits/snoozes) counter is now correctly reset between ...
    jp jp June 2011 Infoseek database
  • Why doesn't my routine work?I have a "level" defined by 504 bytes (28 squares across x 18 squares down) I'm trying to write a routine that will take an X,Y coordinate in pixels…

    ... Spectrum's three-byte FRAMES counter fifty
    ; times a second ... flags so a user-written program must
    ; disable interrupts to ... ; Increment lowest two bytes of counter.
    LD ($5C78),HL ; Place ...
    Dr BEEP Dr BEEP June 2011 Development
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... ? I mean, is increasing t_states counter by an appropriate value after ... where I run this "monitor program" from rom, will it allow ...
    PeterP PeterP June 2011 Emulators
<1…21222324252627…34>

Latest Posts

  • I am currently watching.....
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  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
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    rich_chandler on April 21
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    harriusherbartio on April 21
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  • +3 Disk drive motor
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