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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…
... ) on the bus and respect ROMCS, just as it would for ... -
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…
... ) on the bus and respect ROMCS, just as it would for ... -
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…
... they don't simply assert /ROMCS whenever any address in the ... /> I'm not sure about ROMCS (and ROMSEL?), though... but since ... 't do anything different for ROMCS than the 48K did. Perhaps ... -
External Rom entry pointHi, this is my first post - so hi. I am writing a rom for the 128k, an just wanted to check a few things. To launch the rom, the entry point is 0x0…
Pull the !ROMCS pin up to 5v to disable the internal rom. -
WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…
... fix a nasty behaviour of ROMCS which causes Spectranet to work ... -
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…
... trace of the program counter. ROMCS would also be useful to ... things together from just M1, ROMCS and D0-D7.
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…
... , I don't quite get '/ROMCS - OUT' and '/A14 - OUT'... is ...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…
... KiB of address space) and '/ROMCS ? OUT' is high (i.e ...PCB for romselector for toastrack/grey +2 giveawayHi guys. I've tried my hand at hardware design, and to my great surprise, my very first design worked as expected... :razz: I wanted to be able to …
... there is a special signal ROMCS/, located on the edge connector ...PCB for romselector for toastrack/grey +2 giveawayHi guys. I've tried my hand at hardware design, and to my great surprise, my very first design worked as expected... :razz: I wanted to be able to …
... other interfaces that use the ROMCS line.
Plus, i ...PCB for romselector for toastrack/grey +2 giveawayHi guys. I've tried my hand at hardware design, and to my great surprise, my very first design worked as expected... :razz: I wanted to be able to …
... other interfaces that use the ROMCS line.
Plus, i ... devices that use the signal ROMCS/, themselves block the address line ...SpectranetHi all, I just bought a spectranet card and have a couple of questions I hope someone can answer for me. I have played around with it on both a +3 …
... +3 to connect the second ROMCS signal, but that pin is ...Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…
... = all devices using only one ROMCS signal (divide, divide plus, betadisc ...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…
... /> - Check TR6, TR3.
- Check romcs signal.
- Check address bus ...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…
... ), then note that A14 and/ROMCS line to the outgoing edge ...ZX Interface 1 Odd ProblemI have just upgraded a rubber key ZX Spectrum (issue 3) to a ZX Spectrum+. Oddly, when used with a ZX Interface 1, CAT 1 produces a question mark. T…
... . Try something else which pulls /ROMCS low, but pages on a ... need a combination of /M1, /ROMCS, /MREQ and address lines in ...DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]
... . It's way for make romcs signals compatible with original divide ... can't be connect with ROMCS if interface is connect to ...Microdrive Serial ProtocolGentlemen, I've been dreaming for a long time to develop a Microdrive emulator, where an SD card loaded with .MDR cartridge images can be accessed t…
... IF1 could decode, since the ROMCS control link is broken there ...US Timex-Sinclair 2068 in EuropeWhilst in the States, I convinced a colleague to bid on a Timex-Sinclair 2068. We won the auction with a price much better than in Europe. Next time …
... a /BE line that replace /ROMCS. This allows the entire 64k ...US Timex-Sinclair 2068 in EuropeWhilst in the States, I convinced a colleague to bid on a Timex-Sinclair 2068. We won the auction with a price much better than in Europe. Next time …
... a /BE line that replace /ROMCS. This allows the entire 64k ...New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
... three signals ROMOE1,ROMOE2 and ROMCS are connect separatelly (compatibility with ...DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]
... thread) controlling the Spectrum's /ROMCS signal.
In an ...DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]
Ben
If the ROM on the Speccy is not responding to a 2.7V logic high signal, you could try this little mod.:-
[CODE]
----+--------+--- +5V
| |
-+- ...DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]
[QUOTE=1024MAK;715858]Ben
If the ROM on the Speccy is not responding to a 2.7V logic high signal, you could try this little mod.:-
[CODE]
----+--------+--- +5V
| |
Barn find #4I think this is some sort of backup device. Its got "007" on the motherboard and the mice have chewed the buttons. Will do a little research later in…
... on the next MREQ then ROMCS is generated, on-board ROM ...Barn find #4I think this is some sort of backup device. Its got "007" on the motherboard and the mice have chewed the buttons. Will do a little research later in…
... the chain - why open collector? ROMCS and NMI can not be ...Barn find #4I think this is some sort of backup device. Its got "007" on the motherboard and the mice have chewed the buttons. Will do a little research later in…
[QUOTE=Shaos;717047]But it's the only device in the chain - why open collector? ROMCS and NMI can not be generated in ZX. Can they?
[/QUOTE]
ROMCS is certainly generated inside the Zeddy.DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]
... 's used to drive the /ROMCS lines on the ZX Spectrum ...DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]
... 's used to drive the /ROMCS lines on the ZX Spectrum ...
