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<1234567…34>
  • What should be the base address to set for my codeHi, I am new here and I have a simple question but one which I have not found an answer to. When I am developming my programs what should I set th…

    ... I start it at the lowest fixed location that I can to ...
    Scrapheap Scrapheap April 2006 Development
  • Z80 assemblerIf I do this [code] LD BC, 0002h [/code] is B=0 and C=2, or the other way around? does it disassemble to 01 00 02 does it disassemble to 01 02 00

    ... is stored in the lowest memory location and the most siginificant byte ... at the next higher memory location. So LD BC,$0002 assembles ...
    Alcoholics Anonymous Alcoholics Anonymous December 2009 Chit chat
  • 48K Speccy Repair Log.Some people may know my love for writing up my repairs of arcade PCBs on various forums so thought I would do the same for this little fella. Had th…

    ... stores 1 bit per address location, so the speccy uses 8 ... 16KB bank but its not clear cut. The greatest concern with ... is 00001000, and as the lowest bit is the rightermost bit ...
    Womble Womble August 2010 Hardware
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... order of highest score to lowest score, march from the right ... + g_players[3].score;

    // clear screen

    sp1_ClearRectInv(& ... the sprite to its initial location, "g_uchar0" is increased by 3 ...
    Alcoholics Anonymous Alcoholics Anonymous April 2008 Development
  • Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…

    ... copy the data into original location, set the registers and start ... go very low with the CLEAR command providing your BASIC program ... to use 24064 for the lowest start address of my machine ... :

    [code]
    10 CLEAR 24063
    20 LOAD "" CODE ...
    ASM ASM November 2010 Sinclair Miscellaneous
  • z88dk sticky?I've just tried to PM Alcoholics Anonymous and couldn't because "Alcoholics Anonymous has exceeded their stored private messages quota and cannot acc…

    ... 'll see if I can clear out some messages in the ... addressing open files at the lowest level. Unused entries in the ... a new file, an empty location is therefore identified by containing ...
    Alcoholics Anonymous Alcoholics Anonymous January 2012 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…

    ... RAM
    jp test_16k ; clear normal RAM in case of ... bc, 1 ; create one free location in workspace

    ...
    inc (hl) ; increment lowest byte
    jr nz, key_int ...
    pop hl ; return location holds error number
    ld ...
    chev chev October 2013 Development
  • AY musicThis is a format I'm proposing for an AY music player. If anyone can see any problems or anywhere it can be improved please say so. An AY music form…

    ... be used at any memory location. Thus all the information regarding ... would be needed is to clear the variables and set the ...
    cyborg cyborg October 2001 Sinclair Miscellaneous
  • Installing Z88DK Z88DK INSTALLATION Z88DK is distributed in two parts. The first part is the platform independent bits (including source and z80 libraries) and th…

    ... #4 first about
    directory location):


    1. SET ... .

    Click OK to clear all pop up boxes. WinCVS ...
    Alcoholics Anonymous Alcoholics Anonymous April 2005 Development
  • anyone got a nice clear pic of a Speccy keyboard?Im making a spectrum keyboard keyword reference widget for the OS X dashboard, basicly at the mo it's just gonna be a picture of a spectrum keyboard …

    ... having trouble finding a nice clear, reasonably high res picture to ...
    Sharopolis Sharopolis May 2005 Sinclair Miscellaneous
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... test programs here to make clear how the engine and its ... . Instead you can specify the location in memory of its structures ... advantages. This will be made clear in the first test program ...
    Alcoholics Anonymous Alcoholics Anonymous April 2006 Development
  • Getting attribute location from a screen coordinates (x,y)I am having trouble figuring out how to convert an x,y coordinate pair (pointing to a specific pixel) to the location of the attribute for the block …

    ... a specific pixel) to the location of the attribute for the ... was gave me the a location that wasn't in the ...
    Scrapheap Scrapheap April 2006 Development
  • CLEAR does not RESTORE the DATA pointer??According to the Spectrum manual, one of the things that a CLEAR command does RESTORE the DATA pointer. Either it doesn't actually do this, or some…

    ... of the things that a CLEAR command does RESTORE the DATA ... program:
    [CODE]
    10 CLEAR 32767
    20 READ a ... first command it sees is CLEAR 32767, which should do a ... isn't restored by the CLEAR command.
    trellis trellis September 2006 Sinclair Basic
  • Location, Location, Location.Guys, Quick question. Im starting to plan my game (as stated in a previous post). You are trapped in a house with zoombies attacking left right and…

    ... imagine each room being a location being driven by 1 of ... will grade it so each location will take time to play ...
    Toxitalk Toxitalk November 2006 Development
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    In BASIC, type CLEAR 49999 then import the ... DE
    and a ; clear the carry flag before
    location
    ; in the streams ... br /> ld (atflg),a ; clear AT flag
    rst 08h ... />
    ld h,$00 ; clear H
    ld l,a ...
    chev chev January 2007 Development
  • Spectaculator and favorites location helpI am using Spectaculator and i have a fair few favorites bookmarked with the menu in the emulator. I have recently moved all my games from my C: dri…

    ... all pointing to my C: location but i cant change it ...
    HonoredShadow HonoredShadow March 2007 Emulators
  • A New 21 UDG Plotter BASIC ProgramHello All, Here goes... My first proper Spectrum program for 20 years! And the reason why I've been asking about multiple banks of UDGS recently. …

    ... /> M=Memory location I=Ink G=Define Graphics C=Clear

    S=Save
    C=Clear

    Written on a ...
    Phil2 Phil2 June 2007 Sinclair Basic
  • How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…

    ... code routine which will
    clear the first 20 rows of ... in memory), which can
    clear the top third, two thirds ... F

    The 'thirds' clear method is as follows :
    This runs extremely quickly, the clear appears to
    happen instantaneoulsy ...
    bobbyjaykid bobbyjaykid July 2007 Development
  • text routineI want to write an adventure in basic, and instead of a writing out a description for each location i want to use a kind of text compression routine …

    ... out a description for each location i want to use a ... compression routine

    each location has a series of numbers ... Setup Word Table
    10 CLEAR
    20 DIM d$(6 ...
    199 REM Print Each Location
    200 FOR n=1 ...
    chop983 chop983 July 2007 Sinclair Basic
  • Blok*Load on Multiface 128Spinning this off into a new thread to avoid cluttering up the original: [url]http://www.worldofspectrum.org/forums/showthread.php?t=17999&page=7[/u…

    ... 31/10/2007
    40 CLEAR 32767
    50 LET t ... :

    LD IX,05C3Dh ;location to load to
    LD ...
    StuBruise StuBruise October 2007 Sinclair Miscellaneous
  • Timex questionI've been writing a program for CCG2008 and it actually has a use for the 512x192 mode of the Timex computers. I read up about port 255 and how the d…

    ... stack being in a funny location. Why does the Timex keep ... value you put after a CLEAR? :???:

    I've never ... />
    My program starts with CLEAR 30000, so it expects SP ... . When I was trying to clear the screen of the second ...
    Jimmy Jimmy May 2008 Development
  • Fastest way to clear a screen.We haven't had an optimizing fun for some time, so let's have some: What's the fastest way to clear a screen (i.e., filling the 6912 bytes at 16384 w…

    ... 's the fastest way to clear a screen (i.e., filling ...
    Patrik Rak Patrik Rak February 2009 Development
  • Location of variableHi everyone When basic makes an array how to you find out the location in the ram of where the data is stored. :) Also, does it store the values in…

    ... to you find out the location in the ram of where ...
    Robin Robin September 2010 Sinclair Basic
  • Lowest safe ramtop for various disk systems ?Can someone give info about lowest safe ramtop for various disk systems ?

    Can someone give info about lowest safe ramtop for various disk systems ?
    Fikee Fikee October 2010 Development
  • Shadow ROM partial decoding not implemented in emulatorsOr at least, not implemented in Spectaculator, and it seems that not in Fuse too. [URL="http://www.speccy.org/foro/viewtopic.php?f=8&t=408&start=53"…

    ... paged, the commands:
    [CODE]CLEAR 32767 : SAVE *"m";1;"rom ... in the shadow ROM. This location contains a simple RET instruction ...
    mcleod_ideafix mcleod_ideafix June 2011 Emulators
  • automatic relocating of non-relocatable codeI was pondering upon the problem of changing absolute addresses used by CALL, JP, etc. when code is moved, without reassembling at the new location; …

    ... [code]
    LOCATE: equ 25000 ;CLEAR LOCATE-1
    STACKP: equ ... /> pop hl ;HL=actual runtime location of ADJUST
    ld de ... ,LOCATE ;DE=assembled location of ADJUST
    and a ...
    Battle Bunny Battle Bunny August 2011 Development
  • Kiwi OS for z80 computerHi everyone, Nearly made my z80 computer with 2K ROM 32K RAM. It has an OS im still writing called Kiwi (apple, blackberry, you get the idea ;D) he…

    ... ;LOAD HL WITH STACK POINT LOCATION
    LD SP, HL ; ...
    OUT (1), A ;CLEAR SCREEN
    GOTO_START
    LD ... />
    LD A, $01 ;CLEAR SCREEN COMMAND
    OUT ($1 ... SAVE_MENU
    LD A, $01 ;CLEAR SCREEN COMMAND
    OUT (1 ...
    Robin Robin August 2011 Announcements
  • ZX80 and 81 hardware questionsI'm finding a lot of the documentation that is ostensibly about the hardware of the ZX80 and 81 to be primarily about the software. I was hoping some…

    ... the stuff that's relatively clear: when M1 and A15 are ... enabled or disabled by the lowest address line when IOREQ + WRITE ...
    Thommy Thommy September 2011 Hardware
  • tiny routine to shift RAMTOP & stackCompressing some data areas above RAMTOP and wanting to make the released space available for BASIC arrays, I needed to move RAMTOP without using CLE…

    ... to move RAMTOP without using CLEAR so that existing variables were ... /c stack at the old location, so this little bit of ... the last segment of the CLEAR routine to finish off. It ...
    Battle Bunny Battle Bunny November 2011 Sinclair Basic
  • Invalid combination of operands and opcodesIt says the error in the title, why is this?? [CODE] ORG 0000 LD HL, 63000 ;LOAD HL WITH STACK LOCATION LD SP, HL ;SET STACK POINTER TO HL LD A, …

    ... 63000 ;LOAD HL WITH STACK LOCATION
    LD SP, HL ...
    CALL CLEAR_LINE ;CLEAR THE LINE
    KEYBOARD_SCAN_MENU ...
    CALL CLEAR_LINE ;CLEAR THE LINE
    LD ... br />

    ;*********************************
    ;(CLEAR LINE)
    ;> A IS ...
    Robin Robin December 2011 Sinclair Miscellaneous
<1234567…34>

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