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<1…12131415161718…34>
  • SZX Beta 128 (aka TRDOS) block questionHello, I have a question or two regarding the Beta 128 (aka TRDOS) block of SZX. Hopefully someone (Jon, Philip) will help me. What is supposed to …

    ... say it is the last value written to port #FF ... though) stores the last value read from port #FF there ... rest as the last value written to the system ... It writes the signal lines value there on store, and feeds ... really uses the last value written to the system ...
    Patrik Rak Patrik Rak August 2010 Emulators
  • New RZX Block Type Suggestion -- AnnotationWho is maintaining the RZX specification at the moment? I'd like to ask for the feasability of the following request. Annotations embedded within th…

    ... add a lot of of value to RZX files as most ...
    takapa takapa August 2010 Emulators
  • Speccy repairs?I've finally got round to testing all the various Spectrums that I seem to have accumulated over the years and discovered that "my" two machines (i.e…

    ... "mine" and has stupid sentimental value I'd be willing to ...
    richl richl August 2010 Hardware
  • Converting 50ths of a second to hours, minutes and seconds...Hi Folks, I have written some code to convert the interal Spectrum clock from 50ths of a second to hours, minutes and seconds. The following code s…

    ... )/50)[/CODE]

    time = Value returned from PEEKing the three ...
    Paddy Coleman Paddy Coleman August 2010 Sinclair Basic
  • Machine code issue...Hi Folks, My trials with MCODE continue and I am stuck. I wrote the following program in BASIC to simply POKE an attribute byte in to a "box" on th…

    ... 010058 LD BC,22528 ;BC=ATTR Address
    09 ADD ... HL,BC ;HL=HL+ATTR Address
    ED4B01FA LD ... LD A,(64004) ;A=ATTR
    77 LOOP2 LD ... (HL),A ;POKE Address,ATTR
    23 INC HL ...
    Paddy Coleman Paddy Coleman September 2010 Sinclair Basic
  • Machine code[CODE] OPCODE HEX ADD LD A,05 3E05 F000 LD B,00 0600 F002 INC B 04 LOOP F004 CP A,B B8 F005 JP NZ,LOOP C2F003 F006 LD B,00 0600 F009 LD …

    ... times and then set a value into ram so i can ...
    Robin Robin September 2010 Development
  • designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…

    ... a
    00111 load load value n into register defined by ... m
    01000 loadreg load value at n reg into m ...
    Robin Robin September 2010 Chit chat
  • MIA title uploaded - Tables (1986/7)Hello, I have upped this title via FTP. It is listed as MIA, and was one of those classified advert programs from the back of the mags. It records t…

    ... it going by entering any value as the date, then when ...
    lordsnooty lordsnooty September 2010 MIA/STP/SDP
  • Our Failing Tapes - what to do with them.So, I've been testing out various tapes with a view to putting some of them on Ebay. Some of them do not load on either side and I've tried it in a f…

    ... with instructions.

    What value is their in malfunctioned cassette ...
    Scottie_uk Scottie_uk September 2010 Sinclair Miscellaneous
  • Game compilationsDo you collect game compilations? Do you consider them valuable? or do you think they are inferior to the original? Personally I don't like game com…

    ... all to discover the real value of game compilations. When answering ...
    Scottie_uk Scottie_uk September 2010 Games
  • Broken +3I have noticed that some members on this forum prefer to repair Spectrums instead of just buying another one from ebay. I would like mine fixed at so…

    ... RAM was alternating between the value 20h (00100000b) and 00h (00000000b ...
    ASM ASM October 2010 Hardware
  • A bug in BASin?Hi Folks, Have I found another bug in BASin? I wrote the following small program: [CODE]10 PRINT AT 0,0;CHR$ PEEK 23556;" " 20 GO TO 10[/CODE] …

    ... ]

    When run the value in address 23556 never changes ...
    Paddy Coleman Paddy Coleman October 2010 Sinclair Basic
  • early 80s utilities softwareHi there - I'm new to this site and just posting as I've found some old tapes during a loft clearout. they are as follows: JRS software - toolkit T…

    ... these be of interest or value to anyone??
    webfear webfear October 2010 Sales
  • Broken keyboard due to broken ULARecalling csmith's thread about dead ULAs, a thread appeared in the Zonadepruebas (Spanish) forum regarding... a dead ULA, but only a partially dead …

    ... , in other words that the value "0" that the ULA puts ...
    Winston Winston October 2010 Hardware
  • I just increased the value of my motorcycle.By putting the clock back. :D

    By putting the clock back.

    :D
    thx1138 thx1138 October 2010 Chit chat
  • Any MCODE programmers fancy a challenge?Hi Folks, I have been using the Micro-Print utility in the archive and found it to be really good. It is the one that provides 32, 36, 42, 51, 64 a…

    ... =Column
    360 REM ar=ATTR
    370 REM INK+(8 ...
    Paddy Coleman Paddy Coleman November 2010 Development
  • Hacking the O.C.P Full Screen Editor/AssemblerIf you have been reading my posts recently then you will know that I am eager to have the sourcecode I wrote for the Spectrum during the period 1988 …

    ... possible terminator BYTE with the value 080h at 089FEh, I know ... " was placed directly after this value of 080h.

    A ...
    ASM ASM November 2010 Development
  • PoC for a ULA video generator described using Handel-C and a Basys FPGA board.Recently, I've taken a course about hardware design for video processing using FPGA's. The HDL used in the course was Handel-C, a C look alike langua…

    ... attribute area, filling it with value #38 (paper 7, ink 0 ...
    mcleod_ideafix mcleod_ideafix November 2010 Hardware
  • Floating bus on 128K models[b]Background:[/b] i need run code with interrupt enabled but i need use stack instruction to maximize performance in copy/shift/mirror routines. dur…

    ... times to do not miss attr area if present

    Fikee Fikee November 2010 Development
  • TV went black & white...Yesterday my old, trusty CRT television suddenly decided to show TV channels in black & white only. (and nothing of value was lost... :grin:) It's a…

    ... ; white only. (and nothing of value was lost... :grin:)

    RetroTechie RetroTechie November 2010 Chit chat
  • Manipulating attributes...Hi Folks, I have written a routine that allows a blue bar to be scrolled up and down a list to select an item. Each item in the list occupies two l…

    ... ;AT 14+a,0;"ATTR Line ";a;"=";ATTR (a,1):
    NEXT ... 1
    200 LET ar1=ATTR (y,0):
    LET ar2 ... =ATTR (y+1,0):
    PAUSE ...
    Paddy Coleman Paddy Coleman November 2010 Sinclair Basic
  • A little program to set the time...Hi Folks, OK, I have amended the program so you now have four routines/functions you can use in your own programs: TIME: GET - Reads the current va…

    ... /> TIME: GET - Reads the current value from FRAMES and stores it ... - Sets FRAMES to the current value of HH,MM and SS ... a user to enter the value of HH,MM and SS ... : GET
    9005 REM Reads value from FRAMES
    9010 REM ...
    Paddy Coleman Paddy Coleman November 2010 Sinclair Basic
  • 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…

    ... add hl, hl ;x4 original value
    ld de, hl ; ... de ; subtract 4x original value
    ; = 28x original value!

    ...
    sekrets sekrets December 2010 Development
  • Fantasy Leagueprobably not the best place to ask... but I don't really no anyone else in England so here it goes! after years of having my friends teasing me on h…

    ... who are steady regulars, I value that more than a guy ...
    VanTammen VanTammen December 2010 Chit chat
  • A fast DRAW routineI was investigating how to speed up the line drawing for the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=20225"]BASIC compiler[/URL]…

    ... when required.
    [*]ATTR were being calculated and written ... ; Sets Carry to signal update ATTR
    ex af, af' ... ; Sets Carry to signal update ATTR
    ex af, af' ... PO_ATTR_2 ; This will update attr accordingly. Beware, uses IY< ...
    boriel boriel December 2010 Development
  • A clever method of using a single 8-bit register to be used for two things at a timeI don't know if this is the way the SAVE routine in the Spectrum works. Anyway, this is what I've learned today. I've been commented the disassembly…

    ... in each turn, decreases its value and then, conditionaly jumps to ... /> So, regardless of the initial value of L, as long as ... read CF to know the value of the bit that is ...
    mcleod_ideafix mcleod_ideafix January 2011 Development
  • Screen$ command, ROM routineHi All, Does anyone know which ROM routine to call for the Screen$ command (and/or the ATTR command)? Any comments on how well it works or the spee…

    ... Screen$ command (and/or the ATTR command)? Any comments on how ...
    R-Tape R-Tape January 2011 Development
  • Singularity (a great first person shooter)I thought I'd post this as I've just played a very good modern game that for some reason most people seem not to have heard of, so maybe some of you …

    ... ) should add some real replay value. Also, the contents of some ...
    ewgf ewgf January 2011 Chit chat
  • final value ?[url]http://cgi.ebay.co.uk/ORIGINAL-MAIL-ORDER-SINCLAIR-ZX80-COMPUTER-BOXED-MINT-/250753220248?pt=UK_VintageComputing_RL&hash=item3a620e7e98[/url] I…

    [url]http://cgi.ebay.co.uk/ORIGINAL-MAIL-ORDER-SINCLAIR-ZX80-COMPUTER-BOXED-MINT-/250753220248?pt=UK_VintageComputing_RL&hash=item3a620e7e98[/url]

    I'm guessing ?800-?1000 , I'd be surprised it if it went for less

    or probably ...
    fog fog January 2011 Chit chat
<1…12131415161718…34>

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