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<1…18192021222324…34>
  • Interface 1bisHas anyone on here got a "Interface 1bis": [URL="https://sites.google.com/site/interface1bis/"]https://sites.google.com/site/interface1bis/[/URL] I …

    ... /> #3F/63 xxxxxxxx00111111 xxxxxxxx00111111 Paging-on,B28=0 CPU0Paging& ... #BF/191 xxxxxxxx10111111 xxxxxxxx10111111 Paging-off,B28=1 CPU0Paging& ... #FF/255 xxxxxxxx11111111 xxxxxxxx11111111 - RAM>CPU0
    #FADF/64223 ...
    Black_Cat Black_Cat September 2013 Hardware
  • LOOK at the size of my Rom/EmulatorOk, we have 16k, 48k, 128k, even a 256 odd k Rom/Emulator But I want more :p Is there anything out there now or been worked on to give more, as the…

    ... /> Since you have to manage paging anyway when you have more ... 's easier than soldering more ram in anyway :)
    guesser guesser October 2013 Sinclair Miscellaneous
  • FREL Comcon Programmable Joystick Interface not working on 128k but on 48kAnother day, another problem :-) My FREL Comcon Programmable Joystick Interface [url]http://www.worldofspectrum.org/infoseekid.cgi?id=1000070[/url]…

    ... multiplex the video RAM. The Z80, ROM, upper RAM and edge connector ... one side, and the lower RAM and the ULA are on ... put all the video and paging logic in one chip which ... multiplexing logic for the contended ram so the resistors are no ...
    guesser guesser October 2013 Hardware
  • New multi-interface for ZXI have in development new interface for ZX Spectrum. PCB size is similar as K-MOUSE interface and on board is CPLD (programmable logic), up to 1MB st…

    ... the standard 128 or +3 paging?[/QUOTE]

    Yes, one ... will support MB02+ memory paging (allram - 512kB ram/flashable rom 512kB. Each ... rom/ram page 16kB can be used ... on ZX. Then can use paging as TR-DOS, DIVIDE, MULTIFACE ...
    velesoft velesoft October 2013 Hardware
  • New multi-interface for ZXI have in development new interface for ZX Spectrum. PCB size is similar as K-MOUSE interface and on board is CPLD (programmable logic), up to 1MB st…

    ... will support MB02+ memory paging (allram - 512kB ram/flashable rom 512kB. Each ... rom/ram page 16kB can be used ... on ZX. Then can use paging as TR-DOS, DIVIDE, MULTIFACE ... + support 128 or +3 style paging. For instance would you be ...
    chev chev October 2013 Hardware
  • Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before. I have an Issue 3 board here. When I opened the case and found a strange pig…

    ... with -- and use them by paging the extra 32kB with some ... (probably the MSB) of the RAM chips to high or low ... upgrade: an 80kB Spectrum with paging! So, it could be that ...
    skagon skagon October 2013 Hardware
  • Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before. I have an Issue 3 board here. When I opened the case and found a strange pig…

    ... 32k of the 64k RAM chips, but they probably ... when they installed the RAM sockets. The fact that ... linked to one of the RAM address lines.

    RAM chip fault), to take ... thing missing to implement paging through OUT commands would ...
    skagon skagon October 2013 Hardware
  • 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…

    ... ; set stack to top of RAM
    call cold_start ; deal with ... /> dec e ; to top of RAM
    jp test_16k ; clear normal ... RAM in case of a hard ... key repeat
    ld bc, paging ; 16-bit I/O
    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…

    ... paging ; prepare for paging
    ld a, %00001111 ; ROM 0, VRAM1, RAM ... (c), a ; do paging
    ei ; enable ... paging ; prepare for paging
    ld a, %00001111 ; ROM 0, VRAM1, RAM ... (c), a ; do paging
    ei ; enable ...
    chev chev 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…

    ... "do stuff" paged in contended RAM pages - we found the hard ... you paged in a contended RAM page while the I register ... machines or won't be paging in contended pages in the ...
    na_th_an na_th_an 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…

    ... high byte of top of RAM
    ld (de), a ; ... (p_ramt), iy ; set top of RAM
    ld hl, initpal - 7 ... A, 0
    ld bc, paging ; VRAM / ROM
    out (scld ... , paging ; select paging
    ld a, %00110000 ; lock paging, ROM 1, VRAM 0, RAM ...
    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…

    ... %00001111 ; ROM 0, VRAM 1, RAM 7
    out (c), a ... ; increment DE
    ld bc, paging ; page out VRAM
    ld ...
    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…

    ... %00001111 ; ROM 0, VRAM 1, RAM 7
    out (c), a ... ; stack counters
    ld bc, paging ; page out VRAM
    ld ...
    chev chev November 2013 Development
  • 128k programmingOk, I have had the normal man look (ie. not really), I want a good resource for 128k asm programming. Mostly just to find out how the RAM bank switc…

    ... hung up about paging in a bank of RAM and keeping it ...
    joefish joefish November 2013 Development
  • Changing the font in z88dkEither I've got this backwards or the documentation is incorrect... :smile: "[URL="http://www.z88dk.org/wiki/doku.php?id=platform:zx"]The standard Z…

    ... is (ROM/RAM, eg) and (optionally) what the paging state will be ... applications with some ROM, some RAM, perhaps not contiguous in the ...
    Alcoholics Anonymous Alcoholics Anonymous December 2013 Development
  • 128k gamesHi. I've come to World of Spectrum for advice. I'm a Commodore guy OK, please be nice to me, as I seek your wisdom! I love the Commodore 128, and I'…

    ... in at the bottom of RAM in place of the normal ... is independent of the memory paging bits, but they're all ... on the middle 16K of RAM to be operating at full ... space and just have 4 RAM blocks in a row, a ... advantage is that changing the RAM page is very quick - ...
    joefish joefish January 2014 Games
  • 128k gamesHi. I've come to World of Spectrum for advice. I'm a Commodore guy OK, please be nice to me, as I seek your wisdom! I love the Commodore 128, and I'…

    ... There are a few additional ram banking configurations, which allow some ... partially because some third party RAM packs didn't support them ... than one bank of 64K ram for paging, allowing for a maximum ... of 512K RAM in total (though ...
    AndyC AndyC January 2014 Games
  • harvard architecture spectrum clone.I got my first +2 before christmas. I'd never given the 128k spectrums much thought, always been a 48k rubber key tradionalist. :smile: I've been me…

    ... bank switching (or paging) could have ... />
    0x8000 RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM
    to (8k) ... br />
    0xA000 RAM RAM RAM RAM RAM…
    1024MAK 1024MAK January 2014 Hardware
  • 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…

    ... 48K, using the 8K RAM of a MF1 to include ... EPROM TK, a
    paging mechanism exists to activate at ... (3C6Bh) - Entry point for "paging" the rest of the EPROM ... 48 uses 112 bytes of RAM in BASIC variables (23734 ... uses *133 bytes of RAM in BASIC variables (23734 ...
    Jmk Jmk January 2014 Emulators
  • PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…

    ... RAM and disconnected /CSROM.
    This way I could test if paging ... , addresses that trigger the PlusDlite paging in are run, for example ... in).
    But as disabling paging in when address 102 (#66 ...
    bverstee bverstee February 2014 Hardware
  • +3 Disk drive motorHi, I'm creating a disk file menu selector. I was wondering how to turn off the +3 drive motor and the motor timeout check from Basic (poking the co…

    ... and also RAM Page 7 - remember to disable interrupts while paging, and ... you enable interrupts after your paging operations.

    Now ... , you simply reverse your paging operations, and return to ... br /> Just copy the paging segments and wrap them around ...
    The_Bert The_Bert February 2014 Development
  • Refactoring the ULAplus HDL descriptionFor the ZXUnio project, I'm refactoring the Verilog code I wrote two years ago to describe the ULA and the ULAplus devices. When I've taken this code…

    ... room to spare for +3 paging ports.
    [img]http://yoursmiles ... core features +3 paging scheme, complete with all-RAM modes. See media ...
    mcleod_ideafix mcleod_ideafix February 2014 Hardware
  • +3 Disk drive motorHi, I'm creating a disk file menu selector. I was wondering how to turn off the +3 drive motor and the motor timeout check from Basic (poking the co…

    ... also RAM Page 7 - remember to disable interrupts while paging, and ... you enable interrupts after your paging operations.

    ... , you simply reverse your paging operations, and return to ... Thanks Bert, I forgot about paging for +3DOS configuration before ...
    Speccy_James Speccy_James February 2014 Development
  • Idea: New interface 1There are a lot of great new interfaces to plug into the back of the spectrum, but things quickly get rather messy! The interface 1 is a very tidy s…

    ... up (Yellow border) or not paging one of the ROMs in ... can remember the ZX81 and RAM pack wobble you will appreciate ...
    rune rune February 2014 Hardware
  • Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…

    ... what winston was saying about paging getting hairy would be if ... get something into the divide RAM from a routine on the ... buffer in the speccy's RAM.
    guesser guesser February 2014 Hardware
  • Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…

    ... that has paged ROM and RAM on board, and it only ... , and it is prevented from paging in on traps etc.)
    guesser guesser February 2014 Hardware
  • Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…

    ... are empty etc) to speccy ram that is going to mean ... once obviously, but all the paging happens repeatedly. :o

    guesser guesser February 2014 Hardware
  • Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…

    ... are empty etc) to speccy ram that is going to mean ... once obviously, but all the paging happens repeatedly. :o
    [/QUOTE ...
    Alcoholics Anonymous Alcoholics Anonymous February 2014 Hardware
  • Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…

    ... quite a bit of Spectranet paging stuff in there. The code ... and used 16K paging (the Spectranet uses 4K paging and it's ...
    Winston Winston February 2014 Hardware
  • 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…

    ... below 49152, page ROM2 and RAM 7

    dos_open equ ... />




    ; paging routine
    ; a=page
    Zup Zup February 2014 Development
<1…18192021222324…34>

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