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<1…12131415161718…34>
  • New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…

    ... #0000? If it's #80...#FF than it's safe, because ... bit7="1" will keep BASIC ROM into place...
    Shaos Shaos October 2013 Hardware
  • New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…

    ... #0000? If it's #80...#FF than it's safe, because ... bit7="1" will keep BASIC ROM into place...[/QUOTE]

    chev chev October 2013 Hardware
  • Games that checksum the ROMHello, is there a list of games that checksum the ROM and won't run (or maybe exhibit a different behaviour) unless it is the original 48k one? Searc…

    ... of games that checksum the ROM and won't run (or ... system that requires the original ROM. And Roller Coaster uses a ... section of $FF bytes which is normally only ... present in the original ROM for one of its platform ...
    chev chev October 2013 Sinclair Miscellaneous
  • Break into programIs there any way of stopping people using the break option in my software productions so they can list the code.

    ... ;STMT-RET (+2A/+3/+3e ROM.1)
    push hl
    LD A,$ff
    LD (23610),A ;reset ...
    Battle Bunny Battle Bunny October 2013 Sinclair Basic
  • Timex 2068 hi-color / hi-res modes.Hello. I know this is not a Timex forum but since it is a very close relative of the Speccy I thought I'd ask my question here. Does anyone know …

    ... ZX Spectrum was the modified ROM.[/quote]Most software released before ... behaviour of port #FE). Port #FF is used to set the ... a 2068 without checksumming the ROM, but after 1984 a fair ...
    chev chev November 2013 Sinclair Miscellaneous
  • Dan Antohi or other Interface 1bis GurusHi Dan I've been getting acquaited with the IF1bis and am starting to appreciate how much more it can do than what Im using it for. I've been using…

    ... on ports #7F and respectively #FF, though using the interface in ... area or for insuring 100% ROM compatibility, when loading a snapshot ...
    Dan Antohi Dan Antohi November 2013 Hardware
  • Switchable Timex Sinclair 2068 ROM modificationI have just finished a switchable TS2068 / Spectrum ROM modification and implemented it on two TS2068s. It uses a 32K EPROM chip for the HOME ROM and…

    Hi Andrew, no the TC2048 ROM doesn't set port F4 ... copyright message to set port FF. That way, depending on the ...
    rga24 rga24 November 2013 Hardware
  • A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…

    ... the data using LD-BYTES ROM routine

    [CODE] // Loading ...
    SCF
    LD A,$FF
    LD IX,56832 ; Address ...
    SCF
    LD A,$FF
    LD IX,$BB80
    SCF
    LD A,$FF
    LD IX,32768
    dbolli dbolli November 2013 Brand new software
  • IX register - using/problemsAre there any rules on using the IX register? Are there any restrictions on the memory locations that it can access? Yes, I know it's slower than us…

    ... ]But in order to avoid ROM use for interrupts, you'd ... more that 256 ff's in the original Spectrum Rom, so if ... and the first byte of rom will act as the data ...
    David Jones David Jones December 2013 Development
  • IX register - using/problemsAre there any rules on using the IX register? Are there any restrictions on the memory locations that it can access? Yes, I know it's slower than us…

    ... /> Same problem occurs with TK90X. ROM's empty space was occupied ... latter model TK95 which ROM was patched with #FF #FF bytes in few ...
    TK90XFan TK90XFan December 2013 Development
  • IX register - using/problemsAre there any rules on using the IX register? Are there any restrictions on the memory locations that it can access? Yes, I know it's slower than us…

    ... more that 256 ff's in the original Spectrum Rom[/quote]

    That's because the ROM is unfinished. It was supposed ... of them in the +3 ROM.
    chev chev December 2013 Development
  • Which Emulator supports Betadisk48?Hi out there and happy new year, I'm looking for an emulator to run with my vision1.7 trdos-rom in 48 mode. Unfortunately most emus only support Bet…

    ... /> // In Beta 128 mode, the ROM is automatically paged in when ... Beta 48 mode, the TRDOS ROM is simply visible in 0x3Cxx ... #FC,
    // and the whole ROM is then paged in/out ... with bit 7 of port #FF.

    // Beta 48 uses ...
    Patrik Rak Patrik Rak January 2014 Emulators
  • A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…

    ... /> ld a,$10 ; page BASIC ROM
    call paginar
    ret ...

    file: db 'game',$ff

    table: db 0 ... /> dw 15678 ; length
    db $ff ; end of list[/code]
    Speccy_James Speccy_James February 2014 Development
  • A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…

    ... dd_l_off_motor

    ; page BASIC ROM
    ld a,$10
    db 'FREDDY.BIN',$ff[/CODE]

    The disk ...
    Zup Zup February 2014 Development
  • My new Spectrum +3 has no start menu.Hi all, I recently took delivery of my 'new' Spectrum +3 from a Fleebay auction. So I serviced the drive on Saturday as it had a snapped drive belt …

    ... 0x2ffd/0x3ffd will return FF's, and the ROM will give up ... possible to hang if the ROM thinks that there's a ...
    balford balford February 2014 Hardware
  • Questions about SEUDI recently purchased SEUD (Shoot-em-up Designer, for those who do not know it) from Cronosoft and tried to familiarize with it, also by peering into …

    ... RET byte in the ROM. It gets replaced with ... ]
    7161 BFD2 3E FF kbon1 ld a,255 ; ... .
    0002 ???? 3E FF ld a,255 ; off ... .
    0006 ???? 3E FF ld a,255 ; off ...
    jonathan jonathan March 2014 Development
  • IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…

    ... #7F; Page in ROM
    00ff = RAM EQU #FF; Page in RAM ... !
    0016 : d37f ENB_WR OUT (ROM),A; Page out RAM
    0074 : d37f DIS_WR OUT (ROM),A; Page out RAM
    Dan Antohi Dan Antohi March 2014 Hardware
  • Loading data from 128 memoryAfter all these years I have come across the LOAD! in 128 basic for storing/restoring data in the 128 memory. How do I go about implementing this in…

    ...
    [*]call $121d in ROM.0
    [/list]
    ... ;switch ROMs to ROM.0 (if in ROM.1)
    call ... $121d ;RAMdisk handler in ROM.0
    call $5b00 ; ... br /> ------ ($01-$0A) = name ($FF = null name)
    ------ ($0B-$0C ...
    Battle Bunny Battle Bunny March 2014 Development
  • Interface 1bis updateSupport for connecting a standard PC keyboard to the interface?s PS/2 socket, in place of a mouse, has been added. The external keyboard?s output is …

    ... br /> ; Entry point to shadow ROM for tape
    ; operations, ... Entry point to the shadow ROM for the
    ; ... 38ac : 16ff LD D,#FF; Caps Shift
    38ae ...
    Dan Antohi Dan Antohi April 2014 Hardware
  • Interface 1bis updateSupport for connecting a standard PC keyboard to the interface?s PS/2 socket, in place of a mouse, has been added. The external keyboard?s output is …

    ... /> ;*
    ; Return to the BASIC ROM
    ;
    ;0092 OUT (BAS ... /> 38a6 : 16ff LD D,#FF; Caps Shift
    AS80 Assembler ...
    Dan Antohi Dan Antohi April 2014 Hardware
  • Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…

    ... .co.uk/zx82.htm"]16KB ROM for ZX Spectrum [/URL] I ... of non-used space in ROM. Just what I need for ... /> 2) Since there are only FF values here, what are the ...
    tstih tstih July 2014 Development
  • ZX-Assembler file handling concept[QUOTE=clausjahn;777075]Dear readers, At this time, it's a good time to ask you, the future users, how to implement the file usage. Let's suggest so…

    ... />
    [code]
    defc WANTEDROUTINES = $ff ; one set bit per wanted ... you about using the TRDOS ROM to read/write from disk ... in its own paged out ROM. In order to use TRDOS ...
    Alcoholics Anonymous Alcoholics Anonymous September 2014 Emulators
  • 48k Stops loading and resetsI've just fixed the problem I had with my Issue 2 Spectrum only showing 16k memory by replacing all of the upper ram. With that job done I've done a …

    ... this (without using a test ROM) is to use a Multiface ... is on start up) to FF.
    Move down a line ...
    Spirantho Spirantho September 2014 Hardware
  • Chuckie Ess 2 tap doesnt work[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0000959[/url] It loads, you press a key and it returns to Basic! Anyone any idea why or got a …

    ... is in progress causes the ROM to generate an error, which ... . At this point DE has $FF in it (instead of zero ...
    Battle Bunny Battle Bunny September 2014 Infoseek database
  • LOAD "" CODE in machine code/store 128 bank dataHow do you LOAD "" CODE from machine code? I have written the following MC routine that fits into a REM statement in a basic program. I want to cal…

    ... /> I want to call the ROM's LOAD "" CODE routine, nothing ... border colours.
    call 3503 ; ROM routine - clears screen, opens chan ... ),sp

    ld a,#ff
    scf
    call 1366 ...
    Jerri Jerri October 2014 Development
  • 48K Not booting properlyBought another faulty spectrum from Ebay. This one, when you turn it on, it looks like it's going to boot OK, but when it gets to the point where it…

    ... you can burn my test ROM (it's on here somewhere ... it).

    Put the ROM in, press the button, and ... a Multiface with a normal ROM, as long as you can ... space. Change a value to FF, move the cursor down a ... . Move back up, change the FF to 00, move down a ...
    Spirantho Spirantho January 2015 Hardware
  • Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…

    ... (struct fzx_state *fs, struct fzx_font *ff, struct r_Rect16 *window);
    extern ... will play nicely with the rom isr
    --max-allocs-per ...
    Alcoholics Anonymous Alcoholics Anonymous February 2015 Development
  • Grey +2 and +2A differencesWas the grey +2 incompatability of some of the Spectrum games fixed with the +2A -B?<br><br>

    ... Amstrad kept tinkering with the ROM. Be interesting to know which ... the BASIC ROM that used to be filled with FF are now ... minor changes to the Editor ROM.
    As if this isn ...
    The_Bert The_Bert June 2015 Hardware
  • EmuZwin 128k banks in assembler Having looked at the assembler help file " ORG [{ RAMn | ROMn },] #target_address [, #dest_address ] Defines target assembling address and ta…

    ... SWAP ; Page in ROM0 128K ROM
    DI
    LD ... br /> SCF
    LD A,$FF
    LD IX,$C000
    ROM
    DI
    LD ... wilson.net/spectrum/rom/"]matthew-wilson.net/spectrum/rom/[/url] for more ...
    dbolli dbolli August 2015 Emulators
  • Renegade by ImagineOn the speccy 128/+2 you got ingame music but not on the +2a/b/3 (paging issue?), although all the 128k's had music on the menu page. Was there ev…

    ... at address $2000 between ROM 0 and ROM 1, and stores the ... /> ld (l_7bff), a ; 7c15 32 ff 7b $0dts[/code]
    This ... at address $2000 between ROM 0 and ROM 1

    Easy ...
    jp jp September 2015 Games
<1…12131415161718…34>

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