-
memory chips spectrum +Hi with regards to memory chips the ones in there are tms4116 in the lower memory.there is some on ebay MCM4116BP20 can i mix these with tms ones or …
... /> For example, the list for issue-3 :
[url]http://members ... />
IC6-IC13 4116/416-3/MN5290-2 4116 150ns
3-SPECTRUM-TANDY_W0QQitemZ220533146372QQcmdZViewItemQQptZUK_VintageComputing_RL?hash=item3358ccc304[/url ... -
PopularComputingWeekly 830714Hi, It's nice that these Popular Computing Weekly issues have been scanned. However, just posting this to let someone know that PopularComputingWe…
20th Jan - Vol 02 Issue 3 I have rescanned the lot as the ones we have were a poor set of scans. I must have don them on scann that was going faulty.
Also the missed pages have been added. -
16 K Sinclair Spectrums Still Available?Hi. I wanted to know if the 16 K Sinclair Spectrums are still available to buy. I have looked around on the net without any success. Maybe someone kn…
... be removed on an 48K issue 3b motherboard to have 16K ... the upper 32K. On an issue 2 board they're socketed ... to desolder them from an issue 3 or above. -
Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…
[QUOTE=-Micky;413144]48K:
Green
D01-275621
Made in UK
48K:
Red
132-317228
Assembled in Portugal
Micky[/QUOTE]First one: Issue 3 B
Second one: Issue 4 A -
Partslist ZX 48K issue 4 PCBHas anyone the partslist from the ZX 48K issue 4 PCB? I can only find those from issue 1, 2, and 3. Thanks! Micky
Can't help, sorry. But where did you find the partslist for a issue 3 PCB?
Cheers
**** Forget it just found it ****
:):):) -
Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…
... .
They are:
48k issue 3 / ULA 6C001E-6 / Serial: Green ... 001-536248
48K+ Issue 6A / ULA 6C001E-7 / Serial ... -
Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…
48K Spectrum - Issue 3
026-076871 (red writing)
Made in the UK -
Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…
I have just come across another Spectrum 48K - issue 3 001-488275 (green writing)
Modulator - 8326, ULA is 6C001E-6 (8335) - any more info needed? -
Where is the other side from the ZX 48 PCB?Has anyone the other side from the PCB? [url]ftp://ftp.worldofspectrum.org/pub/sinclair/technical-docs/ZXSpectrumIssue3-PCB_Bottom.gif[/url] Micky
... new one because mine from issue 3b is faulty.
issue 3 or 4 or does anyone ... -
Detecting ZX Interface 1 ROM VersionIs there any way of checking which version of the ZX Interface 1 is present? I know that the later ROMs were better at networking - what other impro…
... /> ROM 2 ...113
ROM 3 ...115[/QUOTE]
... 13[/URL] of Your Spectrum Issue 20.
The number being ... br /> If you have an Issue 1 you will get a ... br /> If you have an Issue 2 you will get a ... ($A76C)
Checksum for an Issue 3? Who knows?! ;) -
Timex 2048 documentsHi, I got Timex 2048, seems to work, but no colors on screen :cry:. Neither TV out, nor Composite works. ULA fault ? It seems TC 2048 uses MC 1377 a…
... have another Timex, but unfortunately issue 2.
I made photos ... images/tc2048_2.JPG[/url]
Issue 5
[url]http://bromba ... my schematics, but starting from issue 3/4 EAR path was changed ... role here. Any schematics for issue 3/4/5 and ideas welcome. -
Retro Computer/Console's? How much are they worth?I'm a keen collector of retro computer/consoles (NES,SNES,Intellivision,Megadrive,Amiga etc..).... How do I know how much they are worth?? As in...…
... on average, these are for issue 1's and 2's ... any more, unless its an issue 3 (called Ace4000) of which the ... -
ZX 48K issue 4a with ULA 5?I got a ZX 48K PCB. It works but it has a ULA 5. I thought on the issue 4a is a ULA 6 or later. Micky
... 6... from around the time issue 3(A/B) was introduced, so ... you found it inside an issue 4A that means it was ... -
damaged spectrum+ (blinking squares)Hi, Sorry for my poor english, but I couldn't find on family forums any remedy for my hardware problem with my first speccy in my life :) I've bought…
... Spectrum Plus case holding an Issue 3 board: The edge connector 23A ... -
Do you still have the same speccie as when you were young!If so - how old is it now - and is it still working? And does it have rubber keys!?
... Spectrum scene, we got a +3 for Christmas 1987. Before that ... really wanted).
The +3 went to my younger brother ... I now have is a Issue 3 Rubber Keyed 48K model from ... -
Timex 2048 documentsHi, I got Timex 2048, seems to work, but no colors on screen :cry:. Neither TV out, nor Composite works. ULA fault ? It seems TC 2048 uses MC 1377 a…
... mentioned previously is in fact issue 3 as marked on board, however ... matches logic for issue 2, crazy...
I ... images/tc2048_5c.JPG[/url]
Issue 5d:
[url]http://bromba ... reason.
Since I have issue 3 that matches schematic I am ... -
Spectranet on the BBC!Yay! I'm famous. Or at least my +3 is famous... [url]http://news.bbc.co.uk/1/hi/technology/10364135.stm[/url]
Well done that man. Your +3 should get a publicist, quick. ... Good News[/I] showing some Issue 3 guts in the 'Technology' ident ... -
DivIDE and joystick interfaceWhich joystick interface works with the DivIDE and ZX 48K? I have TurboRAM but it works not correct or blocks DivIDE. Multiface One works with the j…
... the 7805 regulator in a issue 3 48K spectrum, I would also ... -
Problem with Centropods?Just been trying to play Centropods on a real 16k Speccy and come up against a snag. The keys don't work! They're meant to be O and P for left and …
... does one know a real issue 2 16k Speccy from an ... circuit board.
My Issue 2 has sockets to allow ... a mate who had an Issue 1 and his didn't ... . Then he later got an Issue 3 and his beeper was twice ... think there were 2 16k Issue 1's though, one without ... -
ZX Spectrum TV AppearancesThis thread is intended to be a long standing thread in which catalogued are Spectrum related Film TV appearances.
I wasn't going to say, as I'm not sure if it's 2 or 3. It's not a 1 though. My guess would be issue 2. No, wait, definitely an issue 3; it doesn't have that extra wonky bit of heatsink. -
Speccy repairs?I've finally got round to testing all the various Spectrums that I seem to have accumulated over the years and discovered that "my" two machines (i.e…
... one which might be an Issue 1 machine... I'm not ... much just grey on an Issue 1 rather than the grey ... guess it's not an Issue 1.
Cheers,
issue 3 used to have it stamped ... a different place on a issue 1 (and maybe 2). If ... -
128 port hardware patchReading the ULA book has reminded me of something. In The Spectrum Hardware Manual (Adrian Dickens) there is a hardware patch to allow free use of al…
... actually on the PCB of issue 3 and up, the circuit is ... -Schematics.gif[/url]
...issue 4 schematic, note TR6.
128 port hardware patchReading the ULA book has reminded me of something. In The Spectrum Hardware Manual (Adrian Dickens) there is a hardware patch to allow free use of al…
... actually on the PCB of issue 3 and up, the circuit is ... CPU. However, checking Smith: "The issue 2 "spider" modification was still ... an integral part of the [issue 3] PCB".
[quote]The ...+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... .
3) Both ISSUE 1 and ISSUE 2 of the +2A ... "+2A +3" diagram from the +3 service manual and my +3 ISSUE 2 board ... you have an ISSUE 1 or ISSUE 3 motherboard for the +3? If so ...+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... /> I now have photos of ISSUE 1, 2, and 4 of ... have an example of the ISSUE 3 too if anyone has one ... both the ISSUE 1 and ISSUE 2 board from the +3, I don ... at the possibility of an ISSUE 3, again I'd like to ...Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…
... later..
+3, not sure what issue as it's not ... toastrack and a rubber keyed issue 3 to dig out when I ...Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
Uploaded [I]again[/I] Issue 3 corrects a mistake with R67 (mis-labelled)ANN: EsxDos 0.73 released (third party - not mine)Papaya Dezign have finally released their firmware/OS for the DivIDE interface. Go get it from [url]http://www.esxdos.org/files/esxdos073.zip[/url]…
... (grey) with board ISSUE 3. Connection to ZX128+2 issue 1 or ZX128 ...Mute switchOn a standard 48K machine, would it do any harm to fit a mute switch into one of the sounders connections ? I mean by 'harm' switching it on / off w…
... . If your PCB is a issue 3 or later (which uses a ... /> If your PCB is a issue 2, then D9 will have ...Mute switchOn a standard 48K machine, would it do any harm to fit a mute switch into one of the sounders connections ? I mean by 'harm' switching it on / off w…
... base of TR7 (on the issue 3 and above).
Personally ...
