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Beta diskJust something that's been bugging me for a while, is the 128k beta disk interface wired differently to the beta 48k as a piece of hardware, or as I …
But could an original Beta Disk interface be used with a 128k machine, for instance allowing a 128k game to be loaded by permitting paging of the upper Ram to occur? -
Red DwarfA Red Dwarf video game - good or bad idea? (given its recent resurgence in popularity in the UK) My ideas: [b]Plots[/b] - An interquel which bridg…
... that the extra 16K of RAM you get access to at ... only get 16K of uncontended RAM (in bank 3) for all ... right places using the normal paging mode.
If they ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... initialisation. This is with Fuse paging the DISCiPLE ROM in and ... . Since the SAM has no RAM/ROM attached to the floppy ... , and it therefore requires no paging circuitry, I expect that the ... -
Disabling the +3 disk buffer; yes, but how?I would like to disable the +3 disk buffer in order to retrieve those 4K from the machine's RAMdisk. By reading the computer manual and some posts on…
... 3DOS ROM uses Page7 of RAM or not, so to be ... H,0 ; first buffer for RAM Disc
LD L, ... 128 ; number of buffers for RAM Disc
CALL $013F ; ... /> DI
LD BC,$7FFD ; paging port address
LD A ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... recognition of the different ROM/RAM pages.
Writing this down ... 'BRUCE' flag. Something poked in RAM, so that that particular page ... in the 'Rudy Biesma' disassembly. Paging is only relevant on 128.... -
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 …
... practical purposes, you want the paging mechanism to be a fast ... ... or 48KB pages? A flexible paging system should allow for these ... more than X MB of RAM? A Z80 can be given ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... recognition of the different ROM/RAM pages.
Writing this down ... 'BRUCE' flag. Something poked in RAM, so that that particular page ... in the 'Rudy Biesma' disassembly. Paging is only relevant on 128 ... a means of determining which RAM bank is paged in. The ... -
Getting PC into HLHello, here's a conundrum for you... Is there a way to obtain the value of the PC register (say into HL) without using absolute addressing such as C…
... 't have to be in RAM...
Assuming that the ... IF2 cart or in special paging mode) you just need to ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... By pre-initialising the emulated RAM with the ROM contents, and ... I]" appears which pages DISCiPLE RAM into #0000–#1FFF and DISCiPLE ... disassemblies.
If the RAM (containing a ROM image) started ... ROM image (in RAM) at #0000 (instead of paging it in at ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... I]" appears which pages DISCiPLE RAM into #0000?#1FFF and DISCiPLE ... /> [QUOTE=zub;684850]If the RAM (containing a ROM image) started ... ROM image (in RAM) at #0000 (instead of paging it in at ... .100)
This differs from paging the disciple in automaticly via ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... have the DISCiPLE ROM and RAM be paged out upon reset ... (or we?) should prevent the paging in at 0x0001 from working ... -
Beta testing FuseHello everyone, We are preparing Fuse for a new release soon and would appreciate help in testing that all the new features and all the old features …
... +D works and not a bug in Fuse:
[QUOTE=serbalgi ... a feature rather than a bug.
+D manual ([1]) states ... first build up in 'main' RAM"
and for BUILD UP ... -
DIVIDE versus ZX128 ROMDivide interface use hardware mapping of extra memory on this fixed points in 48rom: #0000 - power-on/reset/rst0/software restart #0008 - syntax erro…
... true allram mode with 16kB ram blocks paging instead ZX rom, but ... all this ram is used for Divide ... -
The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... /> There's another bug on the schematics, the RAM, a toshiba 5565 ... -
Beta testing FuseHello everyone, We are preparing Fuse for a new release soon and would appreciate help in testing that all the new features and all the old features …
... contents of the +D / DISCiPLE RAM to recommend a particular format ... format variables in +D / DISCiPLE RAM to match the format chosen ... images.
Fuse's bug #280, which dealt with the ... -
The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…
... pause computer (active /WAIT) - static ram chips not need refresh :-)[/QUOTE ... any time ( = bit D3 from paging port 7FFD connect with ula ... -
Rocky Gush Floppy Drive InterfaceI have a Rocky Gush Floppy Drive Interface which I would like to post the details under the Hardware section of the website. What is correct procedur…
... accessed, so the 6264 RAM's chip selected line ... whilst the FloppyOne's RAM is being accessed, presumably ... of the contents of the RAM of other peripherals.
RAM from 0x3000?0x3fff, but ... 't fully understand the paging logic, and am not ... -
Rocky Gush Floppy Drive InterfaceI have a Rocky Gush Floppy Drive Interface which I would like to post the details under the Hardware section of the website. What is correct procedur…
... whilst the FloppyOne's RAM is being accessed, presumably ... the contents of the RAM of other peripherals.[/ ... /CS1 of the 6264 RAM would be low for ... RAM/MMIO is paged out.
It certainly seems that paging ... DOS' ROM and paging of the RAM/MMIO are linked ... -
Interface 1 bisOk, well the postmans just been and brought with him my new arrival, the Interface 1 bis. So as promised I thought I'd share some initial usage exper…
... rom, could the 128k models paging still be enabled along with ... />
Yes, quite right. Paging of higher RAM will work.
Tracking down the last few bugsHi all. My emulator nears completion. Like many, I have tested against the FUSE suite of tests, and my emulator passes every one. However, I still h…
After several bug fixes, FBZX WII passes all ... -ff] 5 + 3
CB RAM [00-ff] 5 + 3
But why ROM and RAM?Tracking down the last few bugsHi all. My emulator nears completion. Like many, I have tested against the FUSE suite of tests, and my emulator passes every one. However, I still h…
[QUOTE=Oibaf;690616]After several bug fixes, FBZX WII passes all ... -ff] 5 + 3
CB RAM [00-ff] 5 + 3
[quote]But why ROM and RAM?[/QUOTE]
It was ... data being in ROM or RAM like they can be for ...Multiface 3 programming guide anywhere?I'm interested in the tantalising little bit of text at the bottom of my Multiface 3 manual (under the "Using 8K RAM" section): "Please send a SAE…
... addresses of things in the RAM are:
[code]
2006 ... off, bit 3 set if paging unlocked, bit 4 is 48k ...Multiface 3 programming guide anywhere?I'm interested in the tantalising little bit of text at the bottom of my Multiface 3 manual (under the "Using 8K RAM" section): "Please send a SAE…
... on", probably regardless of the paging status, but I'm guessing ... addresses of things in the RAM are:
[/QUOTE]
... top-end of the 8K RAM (machine state) and most ... which bits of the RAM I could safely use ... +3DOS in the 8K RAM which has been modified to ...SAM Coupe - a video problemHi mates. Lately I managed to acquire a SAM Coupe 512K. There are, however, certain problems that - I thought - You might help me with, in a mome…
... ]
Can be bad ram (too slow dram chips) or ... of lifetime) or can be bug in ROM chip (very old ...SAM Coupe - a video problemHi mates. Lately I managed to acquire a SAM Coupe 512K. There are, however, certain problems that - I thought - You might help me with, in a mome…
... />
> Can be bad ram (too slow dram chips) or ... of lifetime) or can be bug in ROM chip (very old ...Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…
... /> Add this poke:-
ram#3: Poke 58368,71
(You will get away without ram#3 for testing purposes probably ...Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…
... the levels is loaded into ram bank 2. Unfortunately, as bank ... />
Ivan has unearthed another bug though. If you look at ...Spec +3e CF Card interface working Great but a different problem popped upHey, just wanted to say thanks to everyone that helped me get my Spectrum +3e and CF card working. I've been playing on it all last night and this a…
... a complete filing system in RAM as a resident driver but ... and RAM on an external interface which provides all the paging and ... have some of your precious RAM consumed by a filesystem workspace ...Spec +3e CF Card interface working Great but a different problem popped upHey, just wanted to say thanks to everyone that helped me get my Spectrum +3e and CF card working. I've been playing on it all last night and this a…
... a complete filing system in RAM as a resident driver but ... and RAM on an external interface which provides all the paging and ... have some of your precious RAM consumed by a filesystem workspace ...
