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ZX PC Interface : The manual, schematics and more info... ZX <-> PC Interface ------------------- Contents 1) The ZX <-> PC Interface 1.1) What is it? 1.2) What does it do? 2) Install…
... / Distribution
4.1) ROM
4.2) Interface
The ROM will do syntaxchecking for the ... from the
original ROM, which makes headerless loading still ... /> part of the ZX ROM.
RST 8 is also altered ... -
Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…
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An IC socket goes in next. I've ... floating. Pin 1 of the ROM's socket isn't connected, so ... pin 27 of the chip socket the RAM will plug into ... the static RAM into the socket.
A couple of ... should not go into the socket. Pin 27 in any case ... -
SPECTRA - RGB SCART Interface for 48K SpectrumSince the launch of the SPECTRA interface back in June 2012, some discussion of it has appeared in the forums in the past (mainly [URL="http://www.wo…
... /> [*] A Kempston joystick socket, with support for auto-fire ... Interface 1 compatible RS232 socket, ideal for connecting to ... a ZX Interface 2 compatible ROM cartridge socket.
[*] Optional ... support for an onboard ROM to override ... -
New from Paul Farrow, the ZXC4This is exciting stuff!!!! Sorry if ive stepped on your toes Paul, wanted people to hear about it!!! [QUOTE]Hi I?m happy to announce the release o…
... /48K Spectrum) which has a ROM cartridge socket.
... interface 1 / SPECTRA interface RS232 socket (10 GBP), the Spectrum 128 ... RS232 socket (16 GBP), and the ... Spectrum +2 Keypad socket (16 GBP). There would be ... -
how to pass arguments from Basic to MC ?can someone explain me (or give some link) how to pass arguments from basic to machine code? i mean something like this: PRINT USR xxxxx, arg1, arg2:…
... /> ORG NN
start RST #20 ; scan over ,
CALL ... .CO.UK for position in ROM )
RST #18
CP ","
Currah MicroSource emulationIt appears to be impossible to emualte the MicroSource in software on the ZX Spectrum SE as hardware polling is required. The following patch is not …
... standard PRINT functionality from the ROM (RST, channels, etc.) as well ... which basically 1) pages BASIC ROM in, 2) calls an ... address in ROM, 3) pages MicroSource ROM back in, 4 ... then calling the predetermined BASIC ROM address with the MicroSource ...fao Winston, Flash romssince you are an expert on flash roms :) do you know how a spectrum +3 can be modified to use flash chips from old motherboard bios chips etc? the r…
... for an in circuit flashing rom ;)
like I say ... flying lead from the empty rom B socketInterface One - New FunctionalityAs you may (or may not) be aware the Interface One is a pretty powerful piece of kit. One of it's greatest features is being able to easily extended …
... )
stackbc equ 2D2Bh ;16K ROM, stacks BC onto calculator
let equ 2AFFh ;16K ROM, 'LET' statement handling routine
cheat equ 1731h ;16K ROM code that does C+3 No power LED, disc motor continually spinning..and no display. I searched the posts and i found a really old thread going back to 2004 where fuses in the psu were discussed, checked em in this an…
hmm, so it looks like the z80 is working at least to some extent.
I'm slightly stumped at this point. Got another rom you can try in it? (a 32kB eprom with the 48k rom in it would do, plugged in in the Rom A socket)48k+ CPU SocketThink I've bitten off more than I can chew... After the desoldering my z80 went without incident, no damaged pads, tracks etc. I expected the socket…
... showed that Z80 and ROM were replaced (without socket) and the soldering ... is connected to Z80, ULA, ROM, IC23 and edgeconnector.
... the ULA out of its socket, and took the 'left' wire ... : Put new Z80 on socket, old ROM on socket, the Spectrum is working ...SPECTRA - RGB SCART Interface for 48K SpectrumSince the launch of the SPECTRA interface back in June 2012, some discussion of it has appeared in the forums in the past (mainly [URL="http://www.wo…
... is to have no ROM socket installed thus allowing the ... to use the Interface 2 ROM socket if preferred.
The ROM cartridge socket of the SPECTRA interface supports ... the real Spectrum ROM.
[*]The ROM cartridge socket can be configured ...SPECTRA - RGB SCART Interface for 48K SpectrumSince the launch of the SPECTRA interface back in June 2012, some discussion of it has appeared in the forums in the past (mainly [URL="http://www.wo…
... /> - standard IC ROM socket
- turned-pin IC ROM socket
- interface with ROM Cartridge socketSPECTRA - RGB SCART Interface for 48K SpectrumSince the launch of the SPECTRA interface back in June 2012, some discussion of it has appeared in the forums in the past (mainly [URL="http://www.wo…
... (and with one of the ROM socket types fitted if selected).
ROM socket
- turned-pin IC ROM socket
- interface with ROM Cartridge socket[/QUOTE ... .
The ROM cartridge socket option would allow the original ...SPECTRA - RGB SCART Interface for 48K SpectrumSince the launch of the SPECTRA interface back in June 2012, some discussion of it has appeared in the forums in the past (mainly [URL="http://www.wo…
Thanks Paul for your explanations. That?s really cool!
I think I need one with a ROM Cartridge socket, once finances (and the female finance minister in-house) allow.
WhizzBang is right, would be great to have a case.SPECTRA - RGB SCART Interface for 48K SpectrumSince the launch of the SPECTRA interface back in June 2012, some discussion of it has appeared in the forums in the past (mainly [URL="http://www.wo…
[QUOTE=schombi;694733]I think I need one with a ROM Cartridge socket [/QUOTE]
Me too. Will be fun to get some carts to burn. Filling up the piggy-bank right now. :)New from Paul Farrow, the ZXC4This is exciting stuff!!!! Sorry if ive stepped on your toes Paul, wanted people to hear about it!!! [QUOTE]Hi I?m happy to announce the release o…
... br /> [*]Create an enhanced Spectrum ROM that supports new streams/channels ... to write to the FLASH ROM (the ZXC3 allocates additional space ... Interface 2. Since the ROM cartridge socket of the ZX Interface 2 ... your own interface to allow ROM cartridges to be used ...New from Paul Farrow, the ZXC4This is exciting stuff!!!! Sorry if ive stepped on your toes Paul, wanted people to hear about it!!! [QUOTE]Hi I?m happy to announce the release o…
... Interface 2. Since the ROM cartridge socket of the ZX Interface 2 ... your own interface to allow ROM cartridges to be used with ...Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... , find pin 28 on the ROM/EPROM socket (if you need a ... one test probe on the ROM/EPROM socket pin 28 and the ...Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... between pin 28 on the ROM/EPROM socket and the middle pin ...ZX Dandanator! Mini - Cartridge system for SpectrumsHi All, I'd like to present a little HW I've developed during the last three months. It's aimed at providing a console-like usage experience for a…
... concerns, due to the Cartridge socket limitations.
However, I'm ... , which already have a ROM cartridge socket in their hardware gadjets. This ... can't avoid.
- Cartridge socket interface you can avoid, if ...ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... that it will work because ROM cartridge socket is a Sinclair standard ... socket (mostly address lines).
All tricks are just standard ROM ...Send in the ClonesPlease name all the Spectrum clones out there ( I would say I need it back on my desk in 5 minutes , but I will be a bit more generous in this case!…
... chips, equipped with 4Kb of ROM (integer calculation only) and ... Research Ltd} with modified ROM (additional command for User ... (6 channels), 32Kb of ROM (with improved BASIC including software ... processor (7.5 MHz), ROM cartridge socket, 2 built-in Microdrive ...Remainder (Mod) calculationsI've been figuring out how to calculate remainders after integer division by a constant divisor k (A mod k = A % k). I found that for most small di…
It's the ROM RST I think
https://skoolkid.github.io/rom/asm/0028.htmlHooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…
... /> - shadow OS / by rewiring RST 0x00 /,
- ROM extensions,
- IM1 routines ... check the ROM code at location 0x0028 (=target of RST 0x28 call ... therefore hook into RST 28.
QUESTION: disclaimer ... ROM overwrites address ...dK'Tronics 4K Graphics ROMHi, I've got a working 4K graphics ROM fitted (today) in my ZX81 (yay!). I'd like to put a RAM chip (battery-backed) in the socket provided, howeve…
... got a working 4K graphics ROM fitted (today) in my ZX81 ... chip (battery-backed) in the socket provided, however the documentation only ...ROM paging questionAssuming the Spectrum 128 memory map and port addresses, but two custom ROMs in place of the normal Editor and BASIC, what is the most efficient way …
... calling a routine in ROM-1 from ROM-0 so that when ... the routine in ROM-1 executes a RET instruction ... assume routines in ROM-0 will use a RST instruction (it doesn ... address of the routine in ROM-1, which means the paging ...Monitor/debugger that doesn't use the Speccy ROM?Was there ever a Spectrum monitor/debugger released that didn't use the ROM, for key input and character output routines? The reason I ask is that i…
... that didn't use the ROM, for key input and character ... appear to use the standard RST 10 for character output, but ...Bizarre stuff in Interface 1's shadow ROMAccording to the Complete Shadow ROM disassembly, the function that exits back to the BASIC interpreter after interpreting IF1 commands is this: [co…
According to the Complete Shadow ROM disassembly, the function that exits ... Return address to main ROM is
05CC RST 18,CHKSYNTAX STMT ... />
Now look at the RST 18 routine:
[ ... what's REALLY in the RST 18 routine? The disassembly contains ...
