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problem with sinclair zx 48 issue 6aHi all, I have the following problem when I turn on my sinclair without rom inserted. [url]http://217.79.64.145/sinclair/5.jpg[/url] when I turn o…
... manuals and repair my sinclair issue 3b (changed low 16kb) and ... 't have picture of tv ula it became extreme hot very ... for my working one sinclair issue 3b [url]http://217.79 ... -
The day after... (25year hardware woes)...so there we were, about to play some ROM-cartridge games on my grey +2... but it didn't seem to like the Ram Turbo interface, won't even boot, ju…
... has died. If not, the ULA has probably developed a fault ... diodes between the ULA and speaker (on an Issue 2) which are ... be an indication that the ULA has gone bad, but memory ... -
Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]
... forum.
ive had an issue 2 spectrum since i was ... and its got through 2 ULA's but its still working ... -
TIPP31 transistor questionYesterday I had the time to try and repair a 4S issue 48k spectrum I had. First of all I replaced all the electrolytic capacitors. The tr4 transistor…
... (disc caps are used on issue 4S boards), is cracked, a ... screwdriver trying to remove the ULA chip. Could it be it ... -
ULA chipHi. Where i can find a ULA 6C001E-6 chip for an 3B issue Speccy ? Also looking for one 7805 heatsink... Thank
... eyes everywhere........
The ULA chips are all pretty much ... /> 7805 heatsink - for what issue, the 3b? Issue 2 and below use ... one type, issue 3 and above use another ... you sure you need a ULA chip - they are quite reliable ... -
ULA chipHi. Where i can find a ULA 6C001E-6 chip for an 3B issue Speccy ? Also looking for one 7805 heatsink... Thank
... 7805 heatsink - for what issue, the 3b? Issue 2 and below use ... one type, issue 3 and above use another ... you sure you need a ULA chip - they are quite ... assume![/QUOTE]
Issue 3B, heatsink over the edge ... but i've 0V on ULA pin 39. The Z80 ... -
Is Ferranti still alive ?And if not......why should there be any restrictions on manufacturing the ULA ?
... FPGA to "make a new ULA", which means that the functions ... of the original ULA can be obtained.
issue, but it could be nice ... -
Is Ferranti still alive ?And if not......why should there be any restrictions on manufacturing the ULA ?
... simply building an identical 1982 Issue 2 Speccy is probably impractical ... - let's call it the Issue 7 - quite easily. A single ... , and an FPGA for the ULA (or perhaps a couple of ... -
128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... enugh to put a +2 ULA into their toast
> ... in 1985) has a AMSTRAD ULA. I remember it broke when ... +128K ( with a issue 9G) that have this ULA.
You ... can see some issue board in ... -
Reason for FLASH attribute?Is it known why Sinclair choose to implement the flash bit in hardware? Since flashing could be easily done with code when needed it seems quite un…
... . It is quite likely the ULA just has a "gain" control ... nice flash was a big issue to the designer, why compromise ... no more room in the ULA. Maybe nobody thought they'd ... -
Why the name "8-bit computer"?The Spectrum was called an 8-bit computer, but what does that mean? For modern hardware and operating systems (32 or 64-bit) it seems to be the poss…
... down. So, he designed the Issue 1 Spectrum around a kit ... Chuntey to put under the ULA.
Because of early ... issues, most of the early issue one machines had to be ... -
Why the name "8-bit computer"?The Spectrum was called an 8-bit computer, but what does that mean? For modern hardware and operating systems (32 or 64-bit) it seems to be the poss…
... down. So, he designed the Issue 1 Spectrum around a kit ... Chuntey to put under the ULA.
Because of early ... issues, most of the early issue one machines had to be ... -
UlaI remplaced an ULA 6c001-6 by an ULA 6c001-7 chip on issue 3B board. It is "crucial" to remove R32 and adding the 2x NAND gates ??? or not ? Thanks.
If it's the ULA I sent you, it'll work fine in any Spectrum from Issue 2 all the way up to issue 6A. Honest!! :) -
UlaI remplaced an ULA 6c001-6 by an ULA 6c001-7 chip on issue 3B board. It is "crucial" to remove R32 and adding the 2x NAND gates ??? or not ? Thanks.
... ;197705]If it's the ULA I sent you, it'll ... fine in any Spectrum from Issue 2 all the way up ... to issue 6A. Honest!! :)[/QUOTE]
issue 4A and 4B boards. -
How can I tell what issue a speccy is from the serial number?Is it possible to know the issue of a speccy just by looking its serial number? What issue a 001-107603 could be? Is it issue 1 (i know its a 16K ma…
... ).
The custom-chip issue is regarding several brands of ... chips like the Spectrum's ULA (and lots of the other ... today. After all, how many ULA's could be fit in ... -
How can I tell what issue a speccy is from the serial number?Is it possible to know the issue of a speccy just by looking its serial number? What issue a 001-107603 could be? Is it issue 1 (i know its a 16K ma…
... the DRAMs. It uses the ULA timning for the lower bank ... is one of the simpler ULA devices ever to be used ... anyone needs to repair an issue 5/6a speccy...
How can I tell what issue a speccy is from the serial number?Is it possible to know the issue of a speccy just by looking its serial number? What issue a 001-107603 could be? Is it issue 1 (i know its a 16K ma…
... lot of the Speccy's ULA is documented in the patents ... ULA in a CPLD (the little brother to an FPGA). The Issue ... 5/6 PLD (programmable logic device, not really a ULA ...How can I tell what issue a speccy is from the serial number?Is it possible to know the issue of a speccy just by looking its serial number? What issue a 001-107603 could be? Is it issue 1 (i know its a 16K ma…
... lot of the Speccy's ULA is documented in the patents ... ULA in a CPLD (the little brother to an FPGA). The Issue ... 5/6 PLD (programmable logic device, not really a ULA ...New Spectrum HardwareHi all. Well its Friday so it seems as good a time as any (business is a bit slack at the moment) to start up a thread about creating new Spectrum ha…
... (programmable logic device) for the ULA to keep chip count down ... simple.
The real issue is an enclosure for all ...Spectrum ULAHi new to forum ,and have been a speccy owner/fan since the begining{like most 30 somthins on this forum !) Anyway what i want to know is the ULA th…
... to know is the ULA the same from issue 3 to 3B ... ?[/B]
Yes! All the ULA ... that 16k speccys were only issue 1 [/B]
... a lot of the second issue were 16K machines also. It ...
[B]I have an issue 2 board for spares the ...Spectrum ULAHi new to forum ,and have been a speccy owner/fan since the begining{like most 30 somthins on this forum !) Anyway what i want to know is the ULA th…
...
As for the issue 2 i have i tends ... the ula as i have tried another .could be another memory issue ...Does anyone have any working Ferranti's?Does anyone know where I might get hold of a Ferranti ULA5C112E-3?? I think this is the problem with one of my rubber key 48K's as it otherwise wor…
Dude, PM me your address again - I don't store peoples' details on my 'puter. I've got several spare ULA's here, just let me know which board issue you're talking about. :)Spectrum ULAHi new to forum ,and have been a speccy owner/fan since the begining{like most 30 somthins on this forum !) Anyway what i want to know is the ULA th…
... the memory chips off the issue 2 and solder it back ... correct memory chips for the issue 2 anywhere?
I ... that i would need a ULA as well as i have ...Does anyone have any working Ferranti's?Does anyone know where I might get hold of a Ferranti ULA5C112E-3?? I think this is the problem with one of my rubber key 48K's as it otherwise wor…
... spare ULA's here, just let me know which board issue you ...Does anyone have any working Ferranti's?Does anyone know where I might get hold of a Ferranti ULA5C112E-3?? I think this is the problem with one of my rubber key 48K's as it otherwise wor…
... ULA fitted it Type 6C001"
I assume its an issue ... 2 you have, it must be.
The ULA ... you describe sounds like an issue 2 speccy with a ... chip replaced and the ULA checked out fine on ... otherwise) just covering the ula's surface (and not ...Does anyone have any working Ferranti's?Does anyone know where I might get hold of a Ferranti ULA5C112E-3?? I think this is the problem with one of my rubber key 48K's as it otherwise wor…
... describe sounds like an issue 2 speccy with a ... enough, an issue 2) was cured by replacing the ULA.
... chip replaced and the ULA checked out fine on ... otherwise) just covering the ula's surface (and not ... than nothing, and those ULA chips weren't really ...Does anyone have any working Ferranti's?Does anyone know where I might get hold of a Ferranti ULA5C112E-3?? I think this is the problem with one of my rubber key 48K's as it otherwise wor…
... before - what happens is, the ULA get very hot and the ... enough, an issue 2) was cured by replacing the ULA. [/QUOTE]
issue two anyway. The sinclair research ... pretty sure its this Ferranti ULA chip.
SimonPoorly Spectrum + Fault diagnosis help needed!Hi, I've got a Spectrum+. Sometime in the past I broke it and sent it off to be fixed. It came back working good as new, but with an issue 2 board i…
... ;202382]
Apart from the issue mentioned above, I'd like ... likely that the Z80 and ULA are working (especially if you ... code by then, and the ULA must be working at least ... , the CPU itself or the ULA not gating the clock into ...Poorly Spectrum + Fault diagnosis help needed!Hi, I've got a Spectrum+. Sometime in the past I broke it and sent it off to be fixed. It came back working good as new, but with an issue 2 board i…
[B]Apart from the issue mentioned above, I'd like ... utter crap.
The ULA controls the image and is ...
2) Swop the ULA and see what happens. Not ... because the ULA is always the cause of ...
