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Upper memory issueZX Spectrum 48K, issue 2, boots fine. Lower RAM OK. When tested with the new test ROM in the Diagboard, for all upper RAM tests "FAIL" is shown. I…
... in the Diagboard, for all upper RAM tests "FAIL" is shown ... -
Spectrum +2 (grey): Mod- and operation- related advices needed.Dear Sirs and Ladies, Please welcome a newbie to the “World of Spectrum” (both to the forum and, well, metaphorically). I’ve recently purchased a…
... ) and connected it’s now-upper pin to R4 (on schematic ... could build one inside the case?
Thank you for ... -
Alternative 48K keyboard/caseLooking for any alternative 48K keyboard/case ... preferably a Fuller FDS or a Transform Ltd. No DK'Tronics or Saga Emperor please (I have/have had …
Looking for any alternative 48K keyboard/case ... preferably a Fuller FDS or a Transform Ltd.
No DK'Tronics or Saga Emperor please (I have/have had those). -
Spectrum 48+ 4S - Upper RAM issue, and now a self-created problem!I recently picked up a known-flaky spectrum off eBay, to have a bit of fun fixing it and reliving youth. It was labelled as 'keyboard duff, shows…
... diagnostics said the whole of upper RAM was faulty (check all ... , I've removed all the upper RAM ICs, replaced with sockets ... -
Upper memory not available in issue 2A friend send me his issue 2 Spectrum for diagnosis. It boots okay but for some reason won't load games over 16kB. He sent also a Smart Card with int…
... diagnostics ROM, which failed the upper memory RAM test, suspecting IC25 ... stays low.
Both upper and lower memories have been ... A15 high to enable the upper memory and under which conditions ... -
Speccy won't bootHi all, I've got an issue 3 48k that won't boot properly. When I turn it on, it either does one of the two following things, it either displays a …
... , just in case there was something about the upper part of RAM ... -
wtb: Spectrum and/or Spectrum Plus CaseLooking to buy a Spectrum (rubber key) and a Plus case. I would be interested in a case only, or a non functional machine - don't want to take a wor…
... (rubber key) and a Plus case. I would be interested in ... a case only, or a non functional ... circulation just to get a case for my Harlequin project. Would ... -
"Henry's Hoard" - completable at last![[i]Please scroll down if you just want the links where the bug-fixed files can be grabbed![/i]] "Henry's Hoard" is a game released by Martyn Brow…
... /> 1. Two items on the upper right of "THE DROP" (14 ... left to right at the upper level, which effectively blocks the ... to the right along the upper row of platforms. This in ... to complete - but in such case they probably would not have ... -
Lower & upper ram IC's for an issue 3 please.Would any of you great folks have 1 spare lower ram, and 1 spare upper ram IC's you would be willing to sell. I'm fixing up a poorly Spectrum that is…
... lower ram, and 1 spare upper ram IC's you would ... -
Replacing lower RAM 4116 ZX Spectrum 48k - desoldering advice please?A long post, but interesting pictures perhaps. :) I'd like some advice: (also apologies I think I picked the wrong 'Hardware' category for this, plea…
... separated the halves of the case (not unexpected). The power supply ... ZX board itself, around the upper edge near the modulator. I ... caught the trace on the upper side of the board that ... of solder present on the upper side of the board - as ... -
ZX Spectrum +3: Collection of 3-INCH DISKS DISCS in Storage Casehttps://www.ebay.co.uk/itm/Amstrad-CPC-Collection-of-3-INCH-DISKS-DISCS-in-Storage-Case-ZX-Spectrum-3/173225046036
https://www.ebay.co.uk/itm/Amstrad-CPC-Collection-of-3-INCH-DISKS-DISCS-in-Storage-Case-ZX-Spectrum-3/173225046036 -
Tutorial: Using UDGs in SpecBASSpecBAS is capable of using graphics mode, in a similar manner to the original Spectrum. Like most things though, the extended nature of SPecBAS's ab…
... p" key. Note the lower-case here! As each of the ... have a corresponding graphic, both upper and lowercase can be used ... for that character. In this case, "a" is CHR$ 97. ... ,address,value - in this case, the Font Bank is in ... 128. Bit 7 in this case is 1 and bit 0 ... -
Random-Access to Microdrive FileI am working on a BASIC program to backup a microdrive text-file to standard tape array-file. To backup a text-file from one microdrive to a secon…
... 254 sectors: in that case, the program will break ... 253
320 POKE DEFADD,FN l(udg):
... POKE defadd+1,FN h(udg):
LET s ...
1311 DATA FN l(buf),FN h(buf)
... 1312 DATA FN l(512),FN h(512)
... -
"Would you like a Case Sir?" (What to do about unceased interfaces).I was a bit inspired by the UK Games Expo . I went on Saturday . I saw all the "laser cut" wood work there and thought . "That has to be unlikely cas…
... . "That has to be unlikely case method No 1".
case , is it still worth the ... willing to accept , in this case , the "horror effect" is all ... -
Case for Wonder-AY (or other cheap ay-sound interface)?Got meself a cap replaced ZX Spectrum with composite video mod :) Woohoo! I want to have an modern sd-interface + ay-interface, both cased... I've se…
... , but I cannot find a case for Wonder-ay anywhere :/ What ... -
Z80onDSK now compatible with +3e with ZXMMC or similarJust updated my utility to work on Spectrums equipped with +3e ROMs and IDE storage. I've tested this with ZXMMC at the moment but don't think there …
... specified memory location
║ -fN: force machine type
║ ... to remove erroneous data in upper
║ memory for 16k ... /> ║ or PC are in upper mem (>0x7fff) utility will ... patched in. Note this causes upper mem to be
║ ... -
Sorting out a Case for a new Raspberry PiI have not got a new Pi yet so this is a bit academic. If I do get one I would want to cut out the USB input . This was done "as standard" on the Fuz…
... old PC power supply case as an outer case and put the ... PCB connector on this outer case to connect up to the ... -
ZX Spectrum Next Development Board in Custom Case with PSU and SD CardI am selling my Spectrum Next Development Board in a Custom Case if anyone is interested... [url="http://ebay.us/bhrQdi?cmpnId=5338273189"]Ebay li…
I am selling my Spectrum Next Development Board in a Custom Case if anyone is interested...
[url="http://ebay.us/bhrQdi?cmpnId=5338273189"]Ebay link to my ZX Spectrum Next[/url] -
How many New Style "Speccy" PCBs are Made to Fit in an "old style" 48K Case? And what are their names? Most of them are produced in small batches so there could be quite a few small variations. Many of these are not produced…
... old style 48k original Spectrum case .So can these PCBs be ... -
Wanted: Talisman. (Small case).I'm looking for a copy of Talisman, the standard cassette case one, not the larger cardboard box version. If anybody has got a copy please contact m…
I'm looking for a copy of Talisman, the standard cassette case one, not the larger cardboard box version.
If anybody has got a copy please contact me, I'm in the UK.
Cheers -
Anyone interested in a brand new Sinclair ZX80 case?A member of the Sinclair ZX World forum is trying to get a run of brand new Sinclair ZX80 cases manufactured. He says this: [quote=jomac] I've b…
... copy of the Sinclair ZX80 case, either the original, or the ... moulded version.
This case would be commercially manufactured using ... be 4 versions of the case. Antenna hole to the left ... -
upper ram tacks / TR4 socket...[url="https://photos.app.goo.gl/MkqzRCuNCV3EPr9E7"]https://photos.app.goo.gl/MkqzRCuNCV3EPr9E7[/url] you can only replace that pesky TR4 so many t…
... looks like somebody attacked the upper ram with a black and ... .. any sugestions for replacing the upper ram tracks ? -
Raspberry PI in a Spectrum 48k+ case Keyboard OptionsHi, I was lucky enough to get an empty Spectrum 48k+ Upgrade Kit Case on eBay. This is good because it doesn't involve taking apart a good Spectrum a…
... empty Spectrum 48k+ Upgrade Kit Case on eBay. This is good ... "Upgraded" on bottom. The 48k+ case has slightly more space to ... compared to the original 48k case. The only problem is I ... -
Standard Sized Cassette Case Inlay Variations.This is all about having "the full instruction" set for the standard sized cassette cases . It is very easy to lose out in this respect and sometim…
... (Virgin budget label) . In this case there are two separate inlay ... to fit inside the cassette case) . The disadvantage with this is ... sheets were included in the case when first sold . Another complication ... -
Keyboard Encoding. Would like to gather thoughts on it.Hi all, I've almost finished the first part of my open-spectrum design, and wanted to bounce one of the ideas I'd incorporated off people prior to…
... to fixing it, in case anyone can point out where ... only one of the 8 upper address lines can be ... buffered lines, but the upper 8 address lines would be ... lines defining which of the upper 8 had a low ... should let me recode the upper address line select at the ... -
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…
... overflows to 0 in this case, but note that this results ... ]
Remarks:
- The 6 upper bits of B contains the ... -
Spectrum Abuse...Just got some new Spectrums in to repair ( I find it a great way to relieve stress, excepting when I do something daft while fixing them... ) One …
... except when I put the case back on. Then it ... checked screw length just in case, and that was OK. ... microscope out. Seriously bad case of dry joints AND ... of the board. Both upper board tracks were completely ... no through plating left, no upper pad, no tracks. And ... -
Building a ZX Spectrum and I have some voltage questionsI've posted about this before looking for parts, but now I've found all the hard-to-get stuff (thank you Retrolium!). So I figured new questions, new…
... thread.
In any case, all the soldering is done ... : -4.31V
+5V to Upper RAM: +4.98V
ZX Spectrum 128 Toastrack Case wanted..Hi all, I realise this is a long shot :-) I'm looking for a ZX Spectrum 128k Toastrack case is anyone has one they're willing to part with / se…
Hi all,
I realise this is a long shot :-)
I'm looking for a ZX Spectrum 128k Toastrack case is anyone has one they're willing to part with / sell?
Thanks,
KbJBASIC Bug: DEF FN after REMHello all, Having mused the Spectrum ROM disassembly by Drs Logan ad O'Hara, I wondered about how good ZX BASIC was at locating the DEF FN when call…
... was at locating the DEF FN when called upon.
... [code]
10 DEF FN a()=10
20 PRINT ... code]
10 REM : DEF FN a()=10
20 PRINT ... routine that looks for DEF FN, DATA and (oddly) ... pigs ear of evaluating the FN call!
...
