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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…
... there's another faulty upper RAM IC, so you've not ... ?
Repeat the memory test BASIC commands and report back what ... -
Issue 6 repair with a twist...(Starting with a slight grump - the forum ate my first attempt at this so this'll probably end up being a bit terse :)) I got a Issue 6 48K machine …
... wide RAM where it may be helpful.
The random test ... (writing random data to memory) isn't ... every new test).
Could be that the data written to ... third test would throw any errors. If always same fixed data is ... -
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…
Run the RAM test program found at [URL="http://zx.zigg.net/zxsoftware/"]http://zx.zigg.net/zxsoftware/[/URL] and post its output here. -
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…
... the lower RAM test failed because of IC16 interfering on the data bus ... -operate with any other upper RAM types. All eight can also ... be replaced with the upper RAM module that I sell, but ... -
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…
... the lower RAM test failed because of IC16 interfering on the data bus ... if an upper RAM IC was interfering with the data bus, it ... with just changing the upper RAM IC and replacing with a ... -
+2 DIAGNOSTICSIs there a diagnostics test available for the spectrum 128 (+2) in tzx format? I've just obtained a spectrum +2 Grey and all looks fine with it on f…
The +2 RAM test on startup checks all ... test, although it's still quite basic.
Since all RAM ... br />
; ---------------
; Fatal RAM Error
; ---------------
; Set the ... faulty:
; RAM bank 7 - Black.
; RAM bank 6 - ... -
Issue 2 Upper Ram, Loading & ResettingI have a 48k Issue 2 Speccy and for the life of me can't track down what the problem is with it. I initially thought that some of the uppe ram ic's w…
I downloaded Zorns RAM tester program a while back thinking that ... fault and not the upper RAM. Swapped the ULA over with ... Issue 2 and run the ram test program again with the same results ... a few Upper RAM IC's, run the test program again and ended ... -
Heatsink for ULAHi, My Speccy 48k issue 4s starts to get temperamental when it's been on for a while. Machine itself is fine but loading gradually becomes more unre…
Could be flaky RAM either?
Run the RAM test program from [URL="http://zx.zigg.net/zxsoftware/"]here[/URL] for both lower and upper banks for a while and see if it reports any issues.
B -
FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…
A couple of test programs in "fzx_reader" and " ... defined on screen and the program pours text into it, ... write justification functions (in this program, fzx_write_justified()). If the input ... neat to write a basic e-reader program when the disk functionality ... -
Trial version of CharAde graphics engine for Sinclair BASICA trial version of my <span style="font-weight: bold;">CharAde</span> graphics engine for Sinclair BASIC is now available. It consists of a block of …
... demo program with some examples from the manual
charade-test-zx ... build and
the charade-test-BASIC-1-orig.bas file is ... zasm assembly of the charade-test-tap.asm file to create ... -
Dead SpectrumHello guys, I've just bought a dead Speccy 48k (Rubber Keyboard Issue 3 board). Basically, when powered on it initially appears to boot up ok, but in…
... Z80 CPU is attempting a RAM test, but the system fails to ... complete the test. Somewhere there is a video ... you tube showing what a RAM test looks like. Blink and you ... data written to the RAM (used by the video system) during the RAM test ... -
Utility to create long REM Line for storing M/C program - Maximum BASIC Line LengthHi, I think there was a Utlity or Toolkit to create a long REM-Line under 48k BASIC to store some MCode in it. So I don´t have to type e.g. 5…
... and replace the auto run Program Data in a tap file with ... add extra lines to the basic program and resave to tape.
basic line has a CLS : ($fb ... -
Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…
... , he was never asked to test the +5V rail. As the ... ROM/EPROM, a ROM based RAM test program should confirm this.
Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…
... /> As Zorn has said, test lower RAM, it's all you can ... do for now, Did you test the output of the 7805 ... ROM/EPROM, a ROM based RAM test program should confirm this.
test firmware? Also, I have a RAM turbo interface ...Help with Spectrum 128k reparationHi! I have the following symptoms with a 128k unit version 6U - On power on, black and white bars (one char width each), white background - Once po…
... "]* Flashed an EPROM (with the RAM test in this page: http://www ... type, did you program ("flash"/"burn") the RAM test at EPROM address 0000 ...Help with Spectrum 128k reparationHi! I have the following symptoms with a 128k unit version 6U - On power on, black and white bars (one char width each), white background - Once po…
... "]* Flashed an EPROM (with the RAM test in this page: http://www ... type, did you program ("flash"/"burn") the RAM test at EPROM address 0000 ...Issue 4A, tests complete fine but get odd crashing problemHi all, I've got an issue 4A which has had all of its lower RAM replaced, TR4, TR5 as well as its CPU. It originally had quite high voltages (20-3…
... the joints on the lower RAM, CPU and caps (I ... whether it was after the RAM and TR4/TR5 was ... or not. My own RAM is clearly a bit lacking ... an error. I ran the RAM test again after Manic Miner (instant ... the tests. I can access BASIC no problem and could run ...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…
To test a RAM chip, we need to ... circuit or crosstalk) on another data line (or elsewhere). So ... , for the best quick test results, two values are ... continuity range to test between the Z80 CPU data pin and the ... data pin (or for the 4116 lower DRAM chips, test ...How do I save my work using FUSE?I'm not having any success using SCR it returns a message about the header being unreadable when I try to LOAD an SCR which was the only viable optio…
... wrote a nice little program and wanted to put ... whatever! 19 lines of basic. Trouble is the SFX ... better running a ZX Basic Windows IDE such as ...
You can edit and test BASIC code in a modern text ... It can also import/export BASIC programs to/from .tap/. ...The state of source level debuggingI was just wondering if we can put on a table everything we collectively know about source level debugging for ZX Spectrum to get an overview of curr…
... point calculator reset for Sinclair Basic. It looks like this:< ... was not removed when the program was rewritten for the ... call emanated from RAM (i.e. from debugged program). If call emanated ... debugger will have to implement basic protocol as described above ( ...Harlequin 128k??Hi peeps... I've seen that you can do a 128k version of the Harlequin board. Is it just the standard board with different chips or is it a dif…
... divIDE57c could you please test to run the program Boovie2 [url="http ... /> An 128k Test-ROM I used found no RAM error nor any ...ZX Spectrum 48k tape loading issueHi guys I have refreshed a ZX spectrum 48k with a new keyboard layer and front case. The machine will power up and seems to work good. Unfortunate…
... checked first the ram available with :
PRINT PEEK 23732 + PEEK 23733 * 256 ... the ULA is not getting data at all. The stereo jack ...ZX Spectrum 48k tape loading issueHi guys I have refreshed a ZX spectrum 48k with a new keyboard layer and front case. The machine will power up and seems to work good. Unfortunate…
... checked first the ram available with :
PRINT PEEK 23732 + PEEK 23733 * 256 ... the ULA is not getting data at all. The stereo jack ...can a backup device damage the spectrum ROM?as above. been using a specmate device which seems to have corrupted my speccys ROM.
... ), the other the lower RAM.[/quote]
Keep in ... or more 4116 "lower" RAM chips is a fairly ... device (Z80, ULA, ROM, RAM) can potentially be damaged... So ... which has a comprehensive RAM test program, even better if it ... has a ROM test program as well, it's ...ZX Spectrum 48k issuesHi all! A couple of days ago I bought my first 48k Speccy off ebay (I already own a beautiful QL expanded with QubIDE interface and 640k ram). It was…
The best test for RAM faults, is a ROM based test program. A number ... of interfaces/ expansions can run a program ... EPROM/EEPROM/flash memory). A RAM test program running from ROM, does ... work even if all available RAM has problems. It can ...Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…
... /> [/code]
The BASIC display loop uses DATA line 791 in this ... at the end of the BASIC program, the BASIC loop took 12.66 ...Fuse 1.3.4 releasedA new release of Fuse, the Free Unix Spectrum Emulator, is now available at the SourceForge project: https://sourceforge.net/projects/fuse-emulato…
... tape browser after saving a test BASIC program without getting this - did you ...Help understanding the Z80.So I have a Z80 CPU and a 32k ram chip. I understand how they connect. (Data and address busses, chip select etc.) But how would i input information…
... RAM) will respond by putting a byte on the data ... br />
So, since RAM comes up in a random ... indeed any instructions from the RAM chip. You have to ... up that RAM chip with a valid program before the ... have a non-volatile program ready for reading there.Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…
... pourri/akalabeth_zx48g.zip
The BASIC loader TXT2Emu has also changed ... s a lot of program data embedded in the BASIC; eg. dungeon structures ... the executable. Plus the BASIC is too big to load ... The method of preserving the program state so that RUN doesn ...
