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Gandalf [z88dk][Nirvana Plus][128Kb]Gandalf 1.00 [url="https://drive.google.com/open?id=1T9HK0_isoMrfogSIJVhPGehjVIdFus4c"]Download Ver 1.00[/url] Long after the destruction of t…
... $5c66, there’s a bank swap snippet, which reads the ... port $7ffd—the usual deal. At that moment, Bank 6 ... is paged in (on both architectures). However, on a 128K ... value $e5. So, Bank 5 is paged in, ... happens. Perhaps the wrong bank is selected by the ... -
Gandalf [z88dk][Nirvana Plus][128Kb]Gandalf 1.00 [url="https://drive.google.com/open?id=1T9HK0_isoMrfogSIJVhPGehjVIdFus4c"]Download Ver 1.00[/url] Long after the destruction of t…
... 5c66, there’s a bank swap snippet, which reads the ... port $7ffd—the usual deal. At that moment, Bank 6 ... is paged in (on both architectures). However, on a 128K ... been messing up my bank switching for months ... , because the empty bank that was being paged ... -
DivMMC Enjoy - I'm not enjoying it!My DivMMC Enjoy arrived today. Excitedly I rushed home to plug it into my +2a. I have quite a few SD card/CF solutions for my computers so I know wha…
... port 7FFD to toogle some bits to page in another bank ... the 128K ROM default interrupt handler. This handler updates port 7FFD with ... so to page in a bank from 128K BASIC, these loaders simply ... interrupt handler has updated port 7FFD. These loaders have to be ... -
New Game - Pietro Bros [z88dk/Nirvana+][b]PIETRO BROS[/b] Pietro and Luizo were transported to pipe world after eating some rancid mushrooms on his pizza. Help them to escape from th…
... 128k Spectrum
; check for 128k spectrum
ld bc,$7ffd ...
; load extra bank for 128k machines
out (c ... -
shadow regs musingIn the process of optimising some assembler, it occurred to me how great it would have been if the Z80's shadow reg opcodes had been a bit more fully…
... intended for a quick register bank swap during interrupts, which makes me ... -
Message to all programmersHello folks, more and more programmers in the recent time are using special loading routines for their Homebrew-Software. This makes their game runn…
... .
Some titles have 128K music. Where possible, I'll ... be stored in another RAM bank on 128K machines. So the first ... RAM, page in the music bank, and load the additional code ... -
Message to all programmersHello folks, more and more programmers in the recent time are using special loading routines for their Homebrew-Software. This makes their game runn…
... =jonathan;463633]Some titles have 128K music. Where possible, I'll ... be stored in another RAM bank on 128K machines. So the first ... RAM, page in the music bank, and load the additional code ... possible to write even the 128k loader in Basic. You can ... -
Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…
... first off forget selecting a bank by poking. That isn't ... OUT to port #7FFD to select the bank (LD BC, #7ffd; LD A ... />
To select which bank to page in in the ... know how to write to bank 7.
Now ... copy it to the screen (bank 5) just use:
... -
Reading Disks via ASMI'm hoping to port my Amstrad game to the spectrum (See the link in my sig for info) I will be targeting the 128 and +3 - the game will not work on …
... I'm thinking I could swap out all the data used ... 3 disk rom (which uses bank 7 for some annoying reason ... enough, and I can bank swap it back when I need ... and C000) , and used bank swapping to flip between 3 ... a hardware screen buffer using bank 7, and only C000 ... -
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…
... contention issues of the various 128K/+2/+2A/+3 spectrum ... which is in the 16K bank $4000-$7FFF. Hence if ... in, so without any bank switching, that is where ... screen. I understand that bank 2 is already resident at ... machine is 128K/+2 and if so load into bank 4 ... -
Swap: ZX80 for Spectrum 128k (toast rack)I have two ZX80's, both rare US models. I don't need two, so thought I could swap one for a 128k Speccy (toast rack model). Cheers
I have two ZX80's, both rare US models.
I don't need two, so thought I could swap one for a 128k Speccy (toast rack model).
Cheers -
128k games wanted.I just got hold of a working +2, and would like some tested and working 128k games for it. Will pay cash, or swap for hardware/software etc... Any 1…
... and working 128k games for it. Will pay cash, or swap for ... hardware/software etc...
Any 128k games considered ... -
what extra port for extra memory ? (256K, 512K, 1024K, etc.)I know that Pentagon uses some extra bits from port 7FFD for extra memory pging: - for 512K model, bit 6 & 7 of port 7FFD - for 1024K model, bit 5, 6…
... extra bits from port 7FFD for extra memory pging ... that handle directly the 7FFD port, without taking into ... lock the port 7FFD (on +128K/+2) and 7FFD & 1FFD ... I will never use port 7FFD for this.
bank number, by combining bits 0-2 from port 7FFD ... -
Port 0x7ffd Partial DecodingI'm trying Pitfighter on my emulator and it runs in +2A/+3 mode but crashes in 128k/+2 mode. I traced it down to an OUT instruction which sends 4 to …
... 3 mode but crashes in 128k/+2 mode.
I ... 128k/+2 machines respond to any port address from 00FD to 7FFD ... 128k/+2 it switches to bank 4. At this point bank ... 4 is empty so 128k/+ ... partial decoding (respond to 7FFD only) to fix it ... -
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 …
... to look at incorporating the 128k commands PLAY and LOAD!, SAVE ... be full 128k emulation. No bank switching. You'll get 128k snapshots out ... rather have? Full 48k, or 128k?
D ... -
256K RAM chips in Spectrum 128KSince I have lot of 256K RAM chips, and my 128K has RAM error, I think about replacing all 16 RAM (64K ones) chips with 256K chips. Then it would be …
... 256K RAM chips, and my 128K has RAM error, I think ... , 2 things are important here: bank switching of that extra RAM ... -
I need ONE 'Crash' mag. Swap anyone?I retrieved my old Crash mags from the attic at the weekend. I have all thee ones I bought from number 1 up to the early 90s when I lost interest EXC…
... anyone got a spare to swap?
I have a ... .
No 27 Apr 1986 (128k cover) Complete and good con ... )
No 27 Apr 1986 (128k cover)
No 28 May ... -
Testing the Ram on a Toastrack 128KHi All My "new" 128K is misbehaving, all the demos I have loaded for it crash instantly, Ghostbusters 128K is playable but one of the background scr…
... All
My "new" 128K is misbehaving, all the demos ... for it crash instantly, Ghostbusters 128K is playable but one of ... commands (however its done) to swap in the pages then I ... -
128K Guru requiredThe answer eludeth me, and I seeketh a higher knowledge! I'm in the process of putting together a very simplistic emulation testbench of my laptop s…
... ROM banks, and emulated port 7ffd. I added periodic (ish 50 ... fake/emulate for a sucessful 128K startup?
-- Richard -
What's wrong with 128k Spectrums...Prolly best posted here in the chit-chat section: 1. The "Delete" Key You've spent a good deal of your time working with a "dead flesh" 48k, and yo…
... , and you upgrade to a 128k+. Who decided that it's ...
Wow, with a 128k Spectrum games take ages longer ... load - all that, ahem, lovely? bank switched goodness :) The Chuntey Field ... -
RAM paging and port usageDear users and developers, I'm just trying to find some detail information about RAM paging on the Spectrum 128 and later models, especially those a…
... />
Spectrum 128k and +2:
port 7ffd bits 0..2 ... is reset, same as Spectrum 128k and +2.
...
Pentagon 128k:
same as Spectrum 128k and +2
128k, bits 6 and 7 of port 7ffd are ... also used to select the RAM bank ... -
UWOL, quest for money - The MojonTwins (ZX SPECTRUM 128k)Uwol didn?t have enough after earning about the 90% of all the income which resulted of selling retrovideogames in Spain and getting himself rich. No…
... while he keeps engrossing his bank account, ?cause that?s the ... extra life.
Spectrum 128k version : [url]http://www.mojontwins ... -
Midi Out from machine codeI need to send midi-signals by machine code, while Basic is too slow for my current project. I already read I can use hookcode #11E, but I have some …
... normal screen is in bank 5, whilst the shadow ... screen is in bank 7. Note that this ... and 0x7fff, which is always bank 5.
...
ROM 1: 128k syntax checker
ROM ... OUT #7FFD, 0
2. OUT #1FFD, 0 (128K editor rom ... -
Boxed ZX Spectrum + with 2 x ZX microdrives, Alphacom32 printer with 3 x thermal rollHi people. I found a bargain at a carboot on Sunday from somebody who didn't know what he was selling. (Im no expert by a long shot) Shamefully, I …
... a profit or do a swap and have decided to pop ... once own a ZX Spectrum 128k +2, but knew what to ... accept Paypal +2.5% or bank transfer (no charge)
ZX Spectrum + 2 x microdrives and Alphacom32 printer + extrasHi people. I found a bargain at a carboot on Sunday from somebody who didn't know what he was selling. (Im no expert by a long shot) Shamefully, I …
... a profit or do a swap and have decided to pop ... once own a ZX Spectrum 128k +2, but knew what to ... accept Paypal +2.5% or bank transfer (no charge)
128K Contention - How to get it right?With my recent hardware hackery, I've built a 128K (toastrack) clone. I can't quite get the contention right though. What I'm lack is a clear descri…
... semi-correct version detects a 128K machine, and passes both High ... the contention behaviour for the 128K ports?
2. How does ... 128/+2 have different memory bank models, does not help either ... really talking about the 128?, bank bit B0 implies odd pages ...128K+2A/+3 RAM layoutDoes anybody know how physical RAM is mapped to ZX 128k+2a/+3 address space ? There are four 64Kx4 chips IC4-IC7. IC4-IC5 seems to be contended (vide…
... RAM is mapped to ZX 128k+2a/+3 address space ?
bank goes to which part of ...
