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<1…28293031323334>
  • FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…

    ... moving text bar with letters of variable width wouldn't be practical ... to know the exact size of each letter, in order to ... ]

    As a matter of fact, we have planned a ... will provide additional features. One of them is a special command ...
    Einar Saukas Einar Saukas September 2013 Brand new software
  • Asm routine for AY playback?Hi, is possible to create and "name" an asm routine for playing some ay data? If yes, how? Example: Ok , I've finished a sound tracker song, now I n…

    ... /stc_player.txt]this disassembly of the Soundtracker player[/url] ... files by using the playlist of the program, right click ... correspond to the 'start address' and 'start address + 6').

    address of the .stc data in HL ...
    DaRkHoRaCe DaRkHoRaCe September 2013 Development
  • Microdrives load & save routinesHello everybody! Who knows where i can find the machine language routines to load/save from/to ZX Microdrives? Many thanks in advance.

    ... code - it's a bit of a hack.[/QUOTE]Many thanks ... (tipically positioned at the start address of that file), then load another ... finally jump to the start address of the second file?
    Saltor Saltor September 2013 Sinclair Miscellaneous
  • Super Tin Foil Hattery - Why Time is Speeding up!I was looking for an image of a speeding clock and found this. Lol! [url]http://crisisboom.com/2011/07/19/why-is-time-speeding-up/[/url]

    ... you to WRITE DOWN the address of the Swiss mirror site, in ... , sealions, etc.) have huge layers of fat they never seem to ... get rid off. Fundamental misunderstanding of basic biology going on there ...
    joefish joefish October 2013 Chit chat
  • LZ4 decoderI encountered the [URL="http://code.google.com/p/lz4/"]LZ4 compressor[/URL] a few weeks ago. Reading the [URL="http://fastcompression.blogspot.co.uk…

    ... br /> ;; Inputs:
    ;; HL: address of compressed data
    ;; DE: destination ... address
    ;;
    ;; Leaves ... ;; reads the length of a sequence of literals or bytes
    stephenw32768 stephenw32768 October 2013 Development
  • Documentation of ZX Spectrum built-in functionsHi, Is there a documentation of the built-in ZX Spectrum 48+ functions (assembly)? I am thinking about something like the documentation included in …

    ... are printed by setting the address of the character to the workspace ...
    chev chev October 2013 Development
  • Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…

    ... br />
    LD IX, 16384 ;Address of the first file to load ... routine
    LD IX, 24576 ;Address of the second file to load ... - to load several blocks of code one after another (tried ... tested, particularly useful in case of, for example, compressed loading ...
    Alessandro Grussu Alessandro Grussu 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…

    ... :
    ld hl, (ch_add) ; copy address of current character
    ld (x_ptr ... :
    ld hl, (ch_add) ; put address of current character
    ld a ...
    ld hl, (worksp) ; get address of workspace
    push hl ; and ...
    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 /> ld hl, membot ; address membot
    call fp_0_or_1 ; stack ... /> ld hl, mem_3 ; base address of number
    add hl, bc ... positive
    inc hl ; address sign byte
    bit 7 ... br /> add hl, bc ; address byte after last byte
    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…

    ... :
    ld hl, constants ; address of table of constants
    jr x80_fgt_2 ; indirect ... ; routine address
    push bc ; stack address
    ret ; end of subroutine
    ld bc, (udg) ; address of first UDG to BC
    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…

    ... stk_fetch ; length and start address of second string
    push ... push de ; stack start address
    inc bc ; ... of string
    ld hl, (k_cur) ; get cursor address< ... pop af ; drop return address
    exx ; alternate ...
    chev chev October 2013 Development
  • Break into programIs there any way of stopping people using the break option in my software productions so they can list the code.

    ... LD HL,9000 ;line number of BASIC error handler
    ld ... from BASIC, save the address from the stack in the ... and replace it with the address of MCTRAP. To disable it, ... sub-routine then that return address (or addresses, depending upon ...
    Battle Bunny Battle Bunny October 2013 Sinclair Basic
  • Rendering clipped glyphSometimes you need to render a glyph of arbitrary size to the screen. And clip it. For example: drawing a mouse cursor means combining drawing of a…

    ... a table of addresses of the first byte of each pixel ... routine fetches the line address from the table, and ... it picks up an address of 0 and just sends that ... bit easier. The row address table is then only ... not 8.

    Of course, the oldest Speccy trick ...
    joefish joefish October 2013 Development
  • z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…

    ... every interrupt and one of a number of ready threads is ... br />
    And stick the address of this subroutine into that 'wpoke ... br />
    [code]
    48 ; ADDRESS (HEX) LIBRARY DESCRIPTION
    49 ... ISR jp is located at address 0xd1d1 which fits in the ...
    Alcoholics Anonymous Alcoholics Anonymous October 2013 Development
  • z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…

    ... -enable interrupts at the end of the isr) but it continued ... a 257-byte table of 0xd4 bytes at address 0xd300. This means ... the z80 will jump to address 0xd4d4 on interrupt.
    * bpoke ... )
    * wpoke() pokes the address of your isr right after that ...
    Alcoholics Anonymous Alcoholics Anonymous 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…

    ... (udg) ; get base address of UDGs
    jr po_char_2 ; ... hl, rtable ; base address of table
    add hl ...
    chev chev November 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 cl_addr ; get start address of row
    ld c, 8 ...
    chev chev November 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…

    ... ld de, token_table - 1 ; base address of token table
    push af ...
    add hl, de ; address of handling routine
    push hl ...
    chev chev November 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…

    ... ; open it
    pop hl ; address of line
    dec hl ; suppress ...
    chev chev November 2013 Development
  • 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…

    ... problems.

    1. Return address from interrupt routine being pushed ... garbage you see is the address of the interrupt routine).
    < ... crossing hits the very bottom of the playing area, the program ... to the left of the very bottom of the playing area ...
    Bandit Bandit November 2013 Infoseek database
  • bitmap address to attribute addressI've searched, but I don't seem to find the proper keywords. I have a bitmap screen address in DL, character aligned (the address of the top byte of…

    ... address in DL, character aligned (the address of the top byte of ... the corresponding attribute address fiddling with that bitmap address?
    < ... On entry HL = Display file address
    ; Preserved HL, BC ... /> ; Exit ;DE = Attr address

    DF-ATT ...
    rich_chandler rich_chandler November 2013 Development
  • 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…

    ... problems.

    1. Return address from interrupt routine being pushed ... garbage you see is the address of the interrupt routine).
    < ... crossing hits the very bottom of the playing area, the program ... to the left of the very bottom of the playing area ...
    jp jp November 2013 Infoseek database
  • Documentation for SP1 for Z88DK?(I was going to post in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=11729"]the other thread[/URL], so if a mod thinks this should go…

    ... you specify the absolute address of the graphic image you want ... screen using graphics defined at address "gr_window". The first column ... gets its graphics from address (gr_window+0) and ... column gets its graphics from address (gr_window+48 )

    Alcoholics Anonymous Alcoholics Anonymous November 2013 Development
  • New game: Tea and SympathyHere's something I knocked up in a few days with AGD, a horizontally-scrolling shooter featuring some very nice sprites Binman drew a while ago which…

    Jonathan, tell me address of main loop, what need fix, please!..
    Slider Slider November 2013 Brand new software
  • Simple memory transfer routineI'm looking for a simple memory transfer routine that shifts 32 bytes of data from the address HL is set to 55143, I have tried using LDIR, but cant …

    ... code then save a block of 1K for 256 UDGs, and ... bc
    ld bc, udgs; address of definitions
    call 0x0b6a; po ...
    chev chev November 2013 Development
  • Collision Detection in SP1Hi, Does anyone have a well-documented example of using collision detection in spritelib. I've search WoS and Z88DK forums but no joy. Something wi…

    ... &sprtbl[0] is the address of the first entry in sprtbl ... &sprtbl[2] is the address of the third entry in sprtbl ... sprtbl[0].s is the address of where the s member ... [2].s is the address of where the s member ... rule out any chance of a collision as fast ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Development
  • Cross platform developmentI'm just vaguely considering supporting a few more retro 8 bit platforms for something I have in mind to do. Just Z80 and 6502 really, but that cove…

    ... practical targets for this sort of approach?[/QUOTE]

    of development and are already ... = char *string
    ; de = address of terminating NUL in string
    of functions in libraries, but ...
    Alcoholics Anonymous Alcoholics Anonymous November 2013 Development
  • Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…

    ... ld e,l ;DE=HL=address of RHS of binary number
    push ... Done1: pop de ;DE=address of RHS of binary number
    ld ... ASCII bytes
    pop de ;address of octal number

    ...
    Battle Bunny Battle Bunny November 2013 Development
  • Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…

    ... /> ld hl,BIN2040 ;H'L'=address of binary number
    LoopIX: ld ... /> ;must be a common multiple of 8 & 6
    BYTsize ... be a multiple of 3
    BIN2040: ;start address of binary number
    Battle Bunny Battle Bunny December 2013 Development
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