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What's going on during a reset?Always wanted to know this. Why does the screen fill with garbage then white lines on black then just a totally black screen? What is happening?
... superlative ROM disassembly:
[code]
; -----------------------
; THE ... 'RAM CHECK' SECTION
; -----------------------
; Typically, a Spectrum will have ... H ; Have we reached ROM - $3F ?
... -
Connecting HDF to Emulator with divIDE supportHi Guys, I'm using ESXDOS 0.8.0 on a divIDE 57c but I want to set it up on an emulator. I've created an HDF of my CF card but I'm struggling with i…
... 1-9, the Spectrum simply reboots to the "(C) 1982" notice. The only way ... with 1.1 containing more complete drive information - it's ... DivIDE write protect" ticked, the DivIDE's ROM traps are active, so ... 's nothing flashed to the DivIDE ROM at that point, so ... -
Connecting HDF to Emulator with divIDE supportHi Guys, I'm using ESXDOS 0.8.0 on a divIDE 57c but I want to set it up on an emulator. I've created an HDF of my CF card but I'm struggling with i…
... , with 1.1 containing more complete drive information - it's possible ... "DivIDE write protect" ticked, the DivIDE's ROM traps are active, so ... there's nothing flashed to the DivIDE ROM at that point, so ... be temperamental like a real spectrum.
I've ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... HOME bank (like the 48k spectrum) with 16k ROM and 48k RAM. You ... . Timex provided Sinclair with complete details of the SCLD and Sinclair had ... Research was done with the spectrum after the 48k and the IF1.
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... in the spectrum case.
Timex was in the middle of modifying the Spectrum ROM ... ironic at the time.
[quote]
There were complete machines ... of TC3256, not just the prototype. The machine was ...Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... complete the boot. It's like if the machine started botting with ROM ... (meaning that it booted with ROM 1)
... a Spectrum 128K toastrack with the original spanish ROM (without the menu). ... It works ok with the ...Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... complete the boot. It's like if the machine started botting with ROM ... second, it boots again with ROM 1.[/QUOTE]
< ... a Spectrum 128K toastrack with the original spanish ROM (without the menu ... ). It works ok with the ...Sending key presses to the spectrumfor a project I want to send automated keyboard presses to the ZX via a micro-controller. Is it possible to send these through the expansion slot? …
... be very fast because the Spectrum changes the row being read very ... when the row the Spectrum is reading is no longer the one ... your device only with the Spectrum running the ROM keyboard routine, which changes ... if you can make a complete loop in less time ...White Spectrum+Hi Folks, There is a photo of a white Spectrum+ on Rick Dickinson's website - did this actually exist i.e. working machine? Paddy
... I had moved on from the Spectrum so the +3 did not last ... of the manual.
* The UK machine was dumbed down, and the ROM was ... though the developers were using the Logan & O'Hara disassembly as their ...White Spectrum+Hi Folks, There is a photo of a white Spectrum+ on Rick Dickinson's website - did this actually exist i.e. working machine? Paddy
... of the manual.
* The UK machine was dumbed down, and the ROM was ... was relegated to a menu. The SPECTRUM command was no longer really ... though the developers were using the Logan & O'Hara disassembly as their ...Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... Spectrum and press "G" in SAM to transfer a copy of the Spectrum ROM ... to the SAM, so it can overwrite the dummy "zxrom.spx" file. Spectrum ... />
3. After complete loading, press NMI on Spectrum
[img]http ...My +2 Guinea PigA grey +2 I bought to perform my experiments on, it's had it's ROM replaced with a 27C256 with Open SE Basic onboard, combined with the Gosh Wonderfu…
... in ROM0. No other Spectrum ROM offers as much functionality as ... mode. It turns the Spectrum into a real computer ... the copyright for the 16k/48k ZX Spectrum ROM runs out?
What about the ... Amstrad produced machine complete with original ROM chip(s), can ...My +2 Guinea PigA grey +2 I bought to perform my experiments on, it's had it's ROM replaced with a 27C256 with Open SE Basic onboard, combined with the Gosh Wonderfu…
... you know when the copyright for the 16k/48k ZX Spectrum ROM runs out ... ?[/quote]
Difficult to say what the law ... or Amstrad produced machine complete with original ROM chip(s), can you ...Spectrum in black TS1500 case with grey "Sinclair ZX Spectrum" labelAt the Spectrum30 event yesterday, someone had brought a Spectrum like object with an unusual case and I never did find out whose it was or where it …
... resistors, making the expansion bus ZX Spectrum compatible and a complete board redesign ... in RAM when compared to the Spectrum (the function dispatcher comes to mind ... to jump into the EXROM from the main 16k ROM).
[QUOTE ...Spectrum in black TS1500 case with grey "Sinclair ZX Spectrum" labelAt the Spectrum30 event yesterday, someone had brought a Spectrum like object with an unusual case and I never did find out whose it was or where it …
... Its a complete board redesign. You can check on the link I ... in RAM when compared to the Spectrum (the function dispatcher comes to ... to jump into the EXROM from the main 16k ROM).[/QUOTE]
...
I removed the upper ...Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... information identified by Fabio Belavenuto. The complete article (in Portuguese) is available ... , usually value "0";
[*]ZX-Spectrum: detailed [URL="http://www.worldofspectrum ... .blogspot.com.br/2012/11/rom-e-porta-254-parte-1 ...Spectranet updateHi all It's been a busy summer, and in any case I've wanted a little bit of a break from doing Speccy stuff to avoid it getting old (pun intended). …
... , right? And there are ROM routines already working with them ... scheme on any of the available spectrum ide interfaces (by compiling ... stubs for all the API calls and then complete a reference ... which is about 50% complete if anyone fancies banging their ...Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... I have a commented disassembly of the two bits of code ... disk space with copies of the Spectrum ROM! Messenger snapshots are 64K ... (potentially unsaved) transfers from the Spectrum, as a sort of ... reaching specific values, so the Spectrum ROM would need to be ...Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... bad will damage the rest of the interface, or the Spectrum itself.
[QUOTE]Messenger snapshots include the Spectrum ROM, but before it is written ... an extra copy of the Spectrum ROM if it's needed. ... have a well commented disassembly of the code from 5 ...TKMEM - the 128K interface for 16K SpectrumsHello all! Here in Brazil, we have made a small production of an interface, totally based on Velesoft?s memory expansion ([url]http://velesoft.speccy…
... .com.br/tech/material/ZX-Spectrum/70.html"]http://www.datacassete ... fifty minutes to complete Prince of Persia rather than the usual sixty ... (~60.1145 Hz), let alone the NTSC Spectrum (~59.65 Hz)!
ROM, 60 Hz frame rate). If ...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…
... port #BB ('patch'). The Spectrum ROM is paged back in by ... ('boot') places the DISCiPLE ROM at #0000 and the RAM at #2000 ... the disassembly. I really wonder whether the problem is that half of the ROM ... is missing... and 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…
... QUOTE=Severino;684374]I have the DISCiPLE rom disassembly in book form (also from ... routines in the rom (according to the book) from 0x2000, the higher 8K ... of the ROM is [I]not[/I] connected to A13 of the Spectrum ... means of a dump of the ROM. I also haven't ...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…
... button is
pressed the ROM is paged in at address # ... it simply only states that the ROM is located at 0000 instead ... key Y (= yes) on the Spectrum; if
the picture has not changed ... until your 128K save is complete, You will
then be ...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…
... that the ROM is paged in after the Z80 puts the address on the address ... roughly) about the time that Z80 needs to complete the fetch that was ... ' function, using addresses which in the Spectrum ROM contains RST #38 instructions ? I ...Spectrum 128K +2 problemhello, i am try to repair my spectrum 128k +2 grey, i remove all ram chips and i have some new ones spares, now i have remove all ram chips, i want …
... ...
i complete remove the ROM chip and nothing change on ... CPU and the rest of the system (like the RAM or ROM chips).< ... CPU from reading the correct information from the ROM. The Z80 will then ... have to be done with the Spectrum [U][B]turned off[/ ...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…
... have expected the 'DOS ROM' to contain the same first byte as the Spectrum ROM in ... in the corresponding area in the Spectrum ROM at the point where the device's ROM is ... ]Geoff Wearmouth's 48 BASIC ROM disassembly[/url][/QUOTE]
Ouch ...Faulty 48K Issue 3 motherboardHi I have a faulty Issue 3 motherboard and would appreciate it if somebody can steer me in the right direction of where to begin with the fault find…
... you check the RAM ic's ULA, CPU and ROM?[/QUOTE]< ... the normal snow with the Spectrum switched off. When I switch the Spectrum on, then the complete ... I tested the RAM IC's, ULA, CPU and ROM by plugging ... it into a working Spectrum.Games/Programs making use of DivIDE featuresHello :) I have a question: I may be wrong, but it looks like the DivIDE and similar interfaces for the ZX Spectrum are almost exclusively used for …
... trying to be a complete o/s -- it ... the heavy(-ier) C library which would supply a more complete ... /> We can argue the toss over whether protothreads or ... and it provides a complete standards-compliant network stack ...
Except when the hardware stack has bugs in ...PCB manufacturersI am using Futurlec's services for many years now, and they deliver good quality. They're not the fastest ones or easy to get in contact with, but I …
... , and I get the feeling they use exactly the same fab as ... /> I have the idea that Paul Farrow's diag rom has more ... too, to make it more complete. Maybe even a led display ... some info when the screen output of the ZX Spectrum fails, but that ...Hardware description - PLUS D interfaceThis new thread will contain onformations of different ZX devices. Some devices contain manuals, schematics or firmware for some chips, but some peop…
... =roko;716970]Hi Vele,
the complete disassembly of Disciple and PlusD have ... for direct compile to BIN/ROM file ?
