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Search Again :: Adv Search 1000 results in 0.029s
<1234567…34>
  • maximum addressable RAM for a Z80 using bank switching?What is the maximum addressable RAM for a Z80 using bank switching? The Enterprise64 home computer could address up to 4MB, is this the limit for a …

    ... RAM for a Z80 using bank switching?

    The Enterprise64 home ... a Z80?

    A bank switching scheme allows the memory to ...
    Rebelstar Rebelstar February 2013 Hardware
  • How did bank switching work on the 128K Spectrums?I'm new to Z80 and ZX Spectrum. So I was wondering how the 128+ models managed to work with more than 64K of memory? I'm somewhat familiar with h…

    ... 'm somewhat familiar with how bank switching works (I believe the Apple ... had a weird way of switching banks...IIRC). Anyway, any insight ...
    cbmeeks cbmeeks October 2015 Hardware
  • BASin and the 128k commandsI've decided to look at incorporating the 128k commands PLAY and LOAD!, SAVE!, MERGE!, VERIFY! for the ramdisk. It won't be full 128k emulation. No …

    ... emulation. No bank switching. You'll get 128k snapshots out of it, and ...
    Dunny Dunny November 2005 Sinclair Basic
  • Betadisk shematics & 48K-CPMHi out there, can someone help me out with the shematics for the Betadisk-Interface? I built one 17 years ago, it works fine till today, but I'm to …

    ... />
    can someone help me out with the shematics for the ... with TR-DOS and a bank-switching-add.
    It would be ...
    PORTHOS PORTHOS October 2008 Hardware
  • 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…

    ... just to find out how the RAM bank switching works and the screen ... switching.

    Any help ...
    Kiwi Kiwi November 2013 Development
  • 48K Issue 3B ROM to EPROM methodsHi folks, While fixing up a completely dead Commodore PET I needed a way of testing the 4116 RAM chips that make up its 32K, some googling found a…

    ... 27 to do the address bank switching, jumper wire from ROM socket ... 1 of original ROM bent out so I didn't have ... board and laid the circuit out on a breadboard, soldered socket ... previously used and laid THEM out on a different bit of ...
    witchy witchy December 2015 Hardware
  • 128K memory bank selection to avoid contention issuesI'm currently developing a game and I'm trying to get my head around the memory contention issues of the various 128K/+2/+2A/+3 spectrum models in or…

    ... which is in the 16K bank $4000-$7FFF. Hence if ... paged in, so without any bank switching, that is where any game ... the screen. I understand that bank 2 is already resident at ... and if so load into bank 4 or 6, and if ... +2A/+3 load instead into bank 1 or 3?? I want ...
    adrian_singh adrian_singh May 2017 Development
  • Quiz VI - Trident on VESA Local Bus.... Something to keep everyone busy while Arjun sorts out his caboodle of questions.... Ok, 12 quick fire questions.. Some cryptic - you`ll have to un…

    ... stating that the bank switching is done by an OUT to an I ...
    Woody Woody June 2002 Games
  • My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …

    ... or thousands of IN and OUT commands, and if you ... have unless you understand ROM bank switching at the hardware level.< ... study the spectrum. Find out what makes it tick. ... The info is out there, most of it ... far. As Cyborg pointed out, you're not proving ...
    Anonymous Anonymous October 2002 Sinclair Miscellaneous
  • My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …

    ... experiment. Perhaps he'll come out with a low-cut, slower ... isn't going to do bank switching.

    This is a ...
    Alessandro Tommasi Alessandro Tommasi October 2002 Sinclair Miscellaneous
  • Advice about drawing sprites on spectrum I've coded sprite drawing before and know all the theory about masks from a long time ago (microhobby rules! ;), but since I did it on Amiga with ha…

    ... ]

    As Cyborg points out, I don't think there ... /> I use this method. Try out this demo:
    [url="http ... . Use 128k bank-switching.
    [/quote]
    The lazy man's out :) The ...
    Alcoholics Anonymous Alcoholics Anonymous July 2003 Games
  • ZXCF InterfaceI'm just trying to get an idea for the ZXCF interface, and to me, it looks a much cleaner design compared to divIDE (Of course, that's just my opinio…

    ... real hardware (only to find out it doesn't work ;) )
    bank switching of ZXCF and it fits ... the rest of the machine bank switches in 16k blocks. Essentially ...
    MikeW MikeW April 2006 Hardware
  • Questions from the new owner of a grey Spectrum +2I managed to pick up a grey Spectrum +2 off of ebay with cheap shipping (I'm in the US... it was $13 total and it has a Donkey Kong tape inside) and …

    ... additional circuit for the added bank switching that the newer ULA provides ... can look at to figure out what changes to make? A ...
    JamesD JamesD September 2006 Hardware
  • basizx newsHello. I've uploaded a new version of basizx. Now there is also an Amstrad CPC incarnation, able to LOAD and SAVE +3 basic files in disc. And the I…

    ... and it was accomplished by bank switching the ROM, allowing two versions ... .

    I just found out that a lot of BASIC ...
    JamesD JamesD February 2007 Development
  • basizx newsHello. I've uploaded a new version of basizx. Now there is also an Amstrad CPC incarnation, able to LOAD and SAVE +3 basic files in disc. And the I…

    ... .

    That *would* require bank switching a ROM which is a ... the ROM call.
    Take out the slowest parts of the ...
    JamesD JamesD February 2007 Development
  • basizx newsHello. I've uploaded a new version of basizx. Now there is also an Amstrad CPC incarnation, able to LOAD and SAVE +3 basic files in disc. And the I…

    ... while maintaining high compatibility. By bank switching you can place things like ... That stuff can be switched out and the freed up space ... to a separate bank and add some bank switching software. An intermediate ... ROM. Franklin found this out with Apple.
    JamesD JamesD February 2007 Development
  • CEZ-GS strikes back with new Spectrum stuff...Something new is aproaching...March 10th will be a great day for our Spectrum! as you can read in this news... [url]http://computeremuzone.com/?id=n…

    ... , as I could switch the bank, do the work and switch ... . Then, it could handle the bank switching transparently. We would still need ... all seem to have run out of gas as additions have ...
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Games
  • Fuse - Is there something wrong with my build?Just built Fuse this morning under 64-bit SUSE Linux 10, x86_64 architecture. It seems to work fine with most of my favorite games. (Manic Miner, Sp…

    ... "out 32765,23" from within 128 Basic to perform a bank switching operation ...
    Digital Prawn Digital Prawn March 2007 Emulators
  • Betadisk shematics & 48K-CPMHi out there, can someone help me out with the shematics for the Betadisk-Interface? I built one 17 years ago, it works fine till today, but I'm to …

    [QUOTE=PORTHOS;307908]Hi out there,

    can someone ... help me out with the shematics for the ... with TR-DOS and a bank-switching-add.
    It would be ...
    velesoft velesoft October 2008 Hardware
  • Usr 0 ?I'm not sure I've ever seen this explained before, but why do some programs (only demos, as far as I can see, so far) need USR 0 mode when run on a 1…

    ... enter POKE 23388,Bank+16: OUT 32765,Bank+16 in 128K ... checked every interrupt, and Bank is switched to the ... same time, POKE 23388,bank+16:PAUSE 1 will ... to store the current Bank number somewhere. I do ... do the "Interlace" screen-switching on Interrupts, so the ...
    LCD LCD January 2009 Sinclair Miscellaneous
  • Cro S2008Hi everybody!!! I hope this is right thread? :-) I want to share with you my new project. I call it ?S2008?? The idea was to build Spectrum48K clo…

    ... by the NMI) allows easy switching between multiple running tasks, or ... the NMI button actually causing bank-switching to occur.

    [QUOTE ... as ZXCF+ and ZXCF+2) out there. Not as much as ...
    glancaster glancaster January 2009 Hardware
  • Re: TS2068 TC2068 Specy emulator cartridgesThere are several designs of emulator cartridges for these two Timex clones, but they all require an original 48K rom to work. This brings up a few q…

    ... one that doesn't need OUT to enable it. So, my ... . No need for bank-switching or extra memory. No OUT commands. Just a ...
    zxbruno zxbruno March 2009 Hardware
  • Basin R15.5 is this a bughi Dunny don't know if this is supposed to happen but if I enter a line say 10 for f= 1 to 10 20 print f 3030 next f if I then move the curser to l…

    ... had much luck with figuring out the graphics side of things ... bank-switching the VGA controller, which means that I have to figure out ...
    Dunny Dunny July 2009 Emulators
  • Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…

    ... figure out how to get my code into the top bank, ... to dos (repeat until upper bank is 'full' / my object ... dos routines from the upper bank (as ram page 7 ... and reclaim some space in bank 5?

    ... , but working around the bank switching seems to be hell on ...
    rbsfou rbsfou August 2009 Development
  • Windows 7Because of the postal strike my copy of Win 7 Pro has turned up today, 3 days before its released. I've built a new machine to put it on as I intend…

    ... to save me trying it out - Will the 32bit version use ... to use some sort of bank switching or similar to get round ...
    ADJB ADJB October 2009 Chit chat
  • Elite +3This is a patched version of ELITE that saves commander data on +3 disks (and +3e hard disks) and of course loads them back. Commander names can only…

    ... the automatic machine at their switching. There specially all is ... code so that at switching of 0 pages the ... It is my working out is it is visible.
    out it for the.
    ... /saving/error checking and bank switching and there is no ...
    d_kef d_kef October 2009 Games
  • Windows 7Because of the postal strike my copy of Win 7 Pro has turned up today, 3 days before its released. I've built a new machine to put it on as I intend…

    ... to save me trying it out - Will the 32bit version use ... to use some sort of bank switching or similar to get round ...
    The Starglider The Starglider October 2009 Chit chat
  • Announcing: The +2A/+3 FLASH ROM adapter boardAs I've mentioned in a couple of other threads, this project is coming along quite well now, so I thought I'd post some details up here. I've built …

    ... - all you need for basic bank switching on an IO port is ... decoding a port to switch bank could be useful to some ... then that's their look out!
    I've already written ...
    guesser guesser December 2009 Hardware
  • Announcing: The +2A/+3 FLASH ROM adapter boardAs I've mentioned in a couple of other threads, this project is coming along quite well now, so I thought I'd post some details up here. I've built …

    ... IF2 rom to the secong bank so you can set the ... shadow screen, need to figure out a way to set the ... in memory that disables the bank switching mechanism
    guesser guesser December 2009 Hardware
  • Converting games from tap to dskHi to all from Greece, Being an old Speccy user and now owner of most models of Spectrum (48k , 48k+ , 128K, +2 grey and +3) , I desided to salvage m…

    ... LD BC,32765
    30006 OUT (C),A
    30008 LD ... LD BC,32765
    30024 OUT (C),A
    30026 EI ... LD BC,32765
    30034 OUT (C),A
    30036 LD ... LD BC,32765
    30052 OUT (C),A
    30054 EI ... 16,17,19,20 for bank switching while others use 0,1 ...
    batsilos batsilos February 2010 Emulators
<1234567…34>

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