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Problem with replacing all upper memory with 4164 chipsGuys, i have a problem with the high memory of a 4B issue. At first the board had OKI chips for high memory and one of them was faulty. Since its ea…
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When using the PRINT PEEK 23732+ PEEK 23733*256 the result is ... -
Problem upgrading 16K SpectrumHello Spec-chums, I've been a long time Commodore user, but also a long-time Speccy admirer (and emulator user). I've recently got hold of a Issue 2…
... copyright message, but carrying out PRINT PEEK 23732 + PEEK 23733 * 256 reveals that ... -
Error Message on memory testI have just tried PRINT PEEK 23732 + PEEK 23733 * 256 on what I think is a 48K rubber key machine and instead of getting either (a) for a 48k unit…
issue 6a faultyHi All I got issue 6a pcb from ebay with status faulty pcb had bad voltages when I power up I changed tr4 ztx650 and all voltages got back on ic6 I h…
... like 16kb machine
print peek 23732+peek 23733*256 get back random ... with 85 and 170 and peek after this get back 85 ... no problems, with 32767 from peek 23732+peek 23733*256
Very simple 128k memory test?Just an idle thought, but... If on a 48K machine: [INDENT][B]PRINT PEEK 23732 + PEEK 23733*256[/B] [/INDENT]yields the last reliable RAM address, …
Broken ram or what?Hi! I own ZX Spectrum 48K. When i run command PRINT PEEK 23732 + 256 * PEEK 23733, I should get answer 65535? But i get 49151. In my machine the upp…
... . When i run command PRINT PEEK 23732 + 256 * PEEK 23733, I should get ...Spectrum lost upper memoryHi again, I have a Rubber key Spectrum(issue 4S) which lost it's whole upper memory. It's worked okay, but i forgot it on over last night. My son wa…
... problems. So i wrote PRINT PEEK 23732+256*PEEK 23733 and got result ...Another machine code problem, sorry[CODE] OPCODE HEX ADD LD A,00 3E00 F000 PUSH AF F5 F002 LD B,05 0605 F003 LD C,06 0E06 LOOP F005 POP AF F1 ADD A,C 80 DEC B 05 …
48k to 128k upgrade - problemsHi friends! I built 128k upgrade according to the [url]http://hw.speccy.cz/128krebuild.html[/url]. After I powered on my Speccy it said hello with s…
... some program and without DivIDE? PRINT PEEK 23732 + PEEK 23733 * 256 gave me ...Spectrum 48K - upper memory MIAI have recently acquired a ZX Spectrum which, according to the sticker on the bottom, should be a 48K model. It's an Issue 3 board, with upper memory…
... extended memory. PRINT PEEK 23732 + PEEK 23733 * 256 returns 32767. PRINT PEEK 23733 returns 127 ...Issue 3B only sees 16k (and RAMTOP NO GOOD on loading)A ZX+ with issue 3B board that i got recently, does not see anything more than 32768 (sometimes 37267..) on "PRINT PEEK 23732 + PEEK 23733 * 256 (Ent…
... than 32768 (sometimes 37267..) on "PRINT PEEK 23732 + PEEK 23733 * 256 (Enter)".
Spectrum 48K - upper memory problemsHi I have a ZX Spectrum 48K issue 3B which does not see upper memory. On PRINT PEEK 23732+256*PEEK 23733 i got result 32767. POKE 32768,85 and PRINT …
... upper memory.
On PRINT PEEK 23732+256*PEEK 23733 i got result ... br /> POKE 32768,85 and PRINT PEEK 32768 gave result 95
POKE 32768,170 and PRINT PEEK 32768 gave result 170
PRINT PEEK 32768 gave result 10
PRINT PEEK 32769 and ...Issue 2 headache!Ive got an issue 2 here that firstly had a blown regulator (fixed), now its reading as a 16k machine (its fully populated), ive replaced and socketed…
... produced no faults, but typing PRINT PEEK 23732 + PEEK 23733 * 256 I get ... i type POKE 44052,85 : PRINT PEEK 44052, answer=85
Followed ... by POKE 44052,170 : PRINT PEEK 44052, answer=170
Query about memorySo I know this has been asked a lot and I beg your brief indulgence. I have scanned through a lot of old threads already but I'm trying to improve m…
... this check,
[QUOTE]PRINT PEEK 23733 and then [ENTER]
PEEK 23733. 127 could be an ... board. Which is correct, can PEEK 23733 ever return 128?
16k --> 48kI bought a zx and found out it was a 16k since when I execute PRINT PEEK 23733 I get 127 Does it mean I get a lesser model? What limitations do I h…
... since when I execute
PRINT PEEK 23733
I get 127 ...The Spectrum Resuscitation ThreadKicking off this thread as a place where people who are fixing/restoring Spectrums (or indeed any other piece of related hardware) can show off their…
... doing a 'POKE 32768,85: PRINT PEEK 32768' returned 93, so consulting ...PowerSlave's Sinclair/Timex collectionNow that I cataloged all the items I have, it's time to show them :) Between bought and offered, my collection items are: - Sinclair Spectrum 128k…
... ) P 068161
Working 50%: PRINT PEEK 23733 gives 127 (So, a ...Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before. I have an Issue 3 board here. When I opened the case and found a strange pig…
... I carried out a
Print Peek 23733
which showed 127 ... a Cheetah 32K RAM expansion, Print Peek 23733 showed 255 as on ...Born again Speccy user with problemsHello all, Firstly I'd like to say a big hello - this is my first post! When I was 8 or 9 or so my dad bought a ZX Spectrum 48K and a whole bunch o…
DIY Issue 1 Internal 32K RAM expansionFollowing on from the information in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=40173"]this[/URL] thread, I finally figured this ou…
... 48K of RAM, verified with PRINT PEEK 23733 returning 255. Success!
Can anyone explain this result?This little sub-routine isn't always doing what it's supposed to; ie. transfer the value from SEED to VARS. Can anyone explain why? I've put in the P…
... PRINT PEEK 23670,PEEK 23671:
POKE 23627,PEEK 23670: POKE 23628,PEEK 23671:
PRINT PEEK ... 23627,PEEK ...Seriously weird Issue 2 issue... (RAM-related)Hi guys; I have been trying to fix up my Issue 2 and have run across a bizarre issue that I haven't seen elsewhere in the forums. Hopefully one of …
... /> MEMCHK = PRINT PEEK 23732 + PEEK 23733*256
UPRAM85 = POKE 32768,85 : PRINT PEEK 32768 ...
UPRAM170 = POKE 32768,170 : PRINT PEEK 32768
48K Ram Check Command not workingI am trying to repair my Spectrum 48k. It is having issues loading games, sometimes they load all the way to launch and then the speccy resets. Oth…
48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…
... /> Ran the memory test
PRINT PEEK 23732 + PEEK 23733 * 256
PRINT PEEK 32805
I get ... I run POKE 32805,170 : PRINT PEEK 32805
I get ...48K Not booting properlyBought another faulty spectrum from Ebay. This one, when you turn it on, it looks like it's going to boot OK, but when it gets to the point where it…
... .
I entered the command 'PRINT PEEK 23732 + PEEK 23733 * 256' and I ...48K Memory MapHi, I'm having some trouble understanding the top of the 48K Memory Map. From reading elsewhere I have this as the memory map: 0 to 16383 - …
... 65367 by running '[code]PRINT (PEEK 23730+256*PEEK 23731)[/code]
Looking ...48K Issue 2 Spectrum showing exactly 16KI've acquired an issue 2 and it quickly became clear that only 16K of memory is available. I've read that some early 48K Spectrums with malfunctionin…
... not socketed.
PRINT PEEK 23732 + PEEK 23733*256 returned 32767. 16K ...help with my original issue 3b from when i was a teen. possible lower ram fault.hello, well ive tried to fix my old speccy, but haven't made much progress. could you help me out with some diagnosis. the fault occurred about…
... then tried to enter the PRINT PEEK 23732 + PEEK 23733 * 256 command but ... .
if I just PRINT PEEK 23732 I get 0.
if I use PRINT USR "A" I get 32600 ...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…
... .
I did the print peek test and got either 32763 ...
