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'Jumping Jack' DisassemblyHello all - in case anyone's interested, I've recently disassembled [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0002658"]Jumping Jack[/URL…
... named as per The Complete Spectrum ROM Disassembly (available on this site ... -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... space with copies of the Spectrum ROM! Messenger snapshots are 64K ... unsaved) transfers from the Spectrum, as a sort of backup ... D compatible ROM and a modified G+DOS for Spectrum emulation on ... specific values, so the Spectrum ROM would need to be patched ... -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... fairly raw, especially on the Spectrum side (which is time-critical ... hardcoded RX ZXROM ('send the Spectrum ROM to the SAM') command, and ... tricky since it contains the Spectrum ROM, nmi.spx (132 bytes at ... -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... of the interface, or the Spectrum itself.
[ ... unsaved) transfers from the Spectrum, as a sort of backup ... /> Messenger snapshots include the Spectrum ROM, but before it is written ... tricky since it contains the Spectrum ROM, nmp.spx (4 bytes ... -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... of the interface, or the Spectrum itself.
Yes, ... /> [QUOTE]Messenger snapshots include the Spectrum ROM, but before it is written ... an extra copy of the Spectrum ROM if it's needed. If ... nmi.spx, which patches the ROM beginning at address 08B6h (file ... -
Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... ]The Messenger format [...] contains the Spectrum ROM, nmp.spx (4 bytes at ... -
Video generation using a CPUWe know it is possible to generate a video signal using a CPU, and this technique was often used on low-end computers in the early 1980's (for exampl…
Oh, so, if they made ROM cartridges for the ZX-80 and ... But again, I bet those cartridges would be expensive too.
Video generation using a CPUWe know it is possible to generate a video signal using a CPU, and this technique was often used on low-end computers in the early 1980's (for exampl…
... ]Oh, so, if they made ROM cartridges for the ZX-80 and ... But again, I bet those cartridges would be expensive too.[/quote ... contained several graphics sets in ROM. They more or less fit ...Another cause for DivIDE problems on 48K'sThe last months some topics were opened to discuss problems with 48K ZX Spectrums and DivIDE. Sofar we found: - Bad Z80's because of poor fanout (si…
... page in the Spectrum rom
or
2. the Spectrum rom not paging ... out quickly enough allthough the DivIDE rom is ...Another cause for DivIDE problems on 48K'sThe last months some topics were opened to discuss problems with 48K ZX Spectrums and DivIDE. Sofar we found: - Bad Z80's because of poor fanout (si…
... NMI button simply reset the Spectrum).
Oddly ... a perfectly working ZX Spectrum everywhere where I go ... of ruling out the Spectrum rom, but not by adding ... rom.
We can't just ignore ZX Spectrum ... owners with a NEC rom that want ...Replacement Microdrive RollersI have a small supply of brand new replacement rubber rollers for the QL and ZX Microdrive - they sit on a spindle on the left hand side of the micro…
... quite so critical on the Spectrum microdrive cartridges, but it certainly is ...Checksum routine wantedI wish to make a program that verify integrity of a Multiface 1 ROM. It is possible to compare each byte of the ROM against a binary dump, but this i…
... if you find a new ROM. ;)[/QUOTE]
My M1 ... ROM has the same value of ... /> Sadly I found no new ROM to contribute in your project ... to calculate CRC32 for the Spectrum ROM. It would be useful to ...DivIDE and Multiface 3Finally got my divIDE up and running, with thanks again to contributors [url=http://www.worldofspectrum.org/forums/showthread.php?p=679210#post679210…
As far as I am aware, the DivIDE and Multiface 3 are not compatable with one another, as they both page the Spectrum ROM out and use their own ROM when you press the button (on either interface).
[I][B]Mark[/B][/I]ZX mask ROM chips curiosityJust out of curiosity... what willl happen if we have a Hitachi ROM and the bridging onboard is on the N positions (for NEC)? While I was searching …
[B][U]GI Spectrum ROM's[/U][/B]
The ... may be that the GI ROM chips don't care which ...Biturbo 2 turbo loader now available for general useAfter tinkering with its code, extracted from a TZX of one of the infamous Italian S.I.P.E. "tape magazines" which published hacked games for the Spe…
... same standard labels of the Spectrum ROM loading routine are followed - "Prog ...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…
... =roko;684062]The Disciples ROM and RAM banks have ... port (#1F). The DISCiPLE ROM *and* RAM are both ... port #BB ('patch'). The Spectrum ROM is paged back in by ... ('boot') places the DISCiPLE ROM at #0000 and the RAM ... RAM at #0000 and the ROM at #2000, instead. ...PlusD Mini: implementing the CPLDI am doing my first attempts on creating a CPLD to use as replacement for the PlusD's GAL (and other logic lateron). I use the Xilinx XC9500XL series…
... 've successfully paged out the Spectrum ROM, but not managed to page ...PlusD Mini: implementing the CPLDI am doing my first attempts on creating a CPLD to use as replacement for the PlusD's GAL (and other logic lateron). I use the Xilinx XC9500XL series…
... 've successfully paged out the Spectrum ROM, but not managed to page ... is some problem with the rom paging.
Here's the ...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…
... extent, you also need the Spectrum ROM to make sense of everything ... be fixed without replacing the ROM!
... but I ... or to read the DISCiPLE ROM without an understanding that the ... resetting the machine. The DISCiPLE ROM will detect that GDOS is ...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…
... examine behaviour of a real Spectrum 128K with a DISCiPLE attached ... functions in the standard ('48k') ROM bank. So switching happens when ... this ROM bank is active at the Spectrum side. For ... the other bank ('128k') of Spectrum ROM is not used at all ...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…
... functions in the standard ('48k') ROM bank. So switching happens when ... this ROM bank is active at the Spectrum side. For ... ' the other bank ('128k') of Spectrum ROM is not used at all ... any special handling of ROM 0 by the Spectrum) to implement this ...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…
... initial instruction as the 48K Spectrum ROM. Interesting. Could the fact that ...Spectrum 48k clonesI saw this website today and numerous 48k Spectrum clones. [url]http://zxspectrum48.i-demo.pl/clones.html[/url] A couple of them are really beautifu…
... clone... it was a Spectrum with Spanish ROM...[/QUOTE]
It is ... a Spectrum clone :) It was ... the copyright of the original Spectrum ROM. The mainboard was not an ... made with Amstrad to distribute Spectrum +2As and +3s in ...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 had meant that the ROM is paged in after the ... , using addresses which in the Spectrum ROM contains RST #38 instructions ? I ... of the Beta interface's ROM were delayed at all, in ...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 had meant that the ROM is paged in after the ... , using addresses which in the Spectrum ROM contains RST #38 instructions ? I ... of the Beta interface's ROM were delayed at all, in ... some internal machine cycles when ROM is replaced.
You may ...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…
...
The separate 'ULA' ROM and 'DOS' ROM images seem puzzling.
ROM.
So it ... different addresses in the Sinclair ROM. This seems quite ingenious ... each of the 16/48K Spectrum ROM's 16384 memory locations (although ...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…
... (since that's where the Spectrum ROM resides).
... If A13 from the Spectrum bus (A1 of U4) is ... depending on A12 (from the Spectrum bus).
... selected depending on the Spectrum bus's A3 line. ... wired straight from the Spectrum's bus to the ...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…
... />
[QUOTE]The ROM does not include the Spectrum DOS, only the ... DOS command.[/QUOTE]
Spectrum DOS? I'm not sure ... follow you. Regarding the 'ULA' ROM, I was remarking on the ... those of the Spectrum ROM (and perhaps the IF1 ROM). It has bits ...I thought I'd give assembly a goAnd well being an absolute newb,I'm absolutely useless.I need your help. I thought I'd give this a go in zxspin [url]http://chuntey.wordpress.com/20…
... assembly programmer are 'The Complete Spectrum ROM Disassembly' [url]http://www.worldofspectrum ... the Speccy's 16-KByte ROM, and then there's [b ...A quick newbish questionI'm reading through 'mastering machine code on your spectrum',as kindly posted by Mr bert on this forum. Correct me if I'm wrong from what i read,bu…
... th areas of memory the spectrum uses for the display?.< ... Cheers again![/QUOTE]
The Spectrum is essentially 65536 8 bit ... read only and contains the Spectrum ROM .
Locations 16384 - ... - 23754 are used for the Spectrum own stuff (though you can ...
