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Whole upper memory lostHi! I own a rubber key Spectrum with 48K RAM. Suddenly it lost it's whole upper memory. All diagnostic programs says that it's 16K model with workin…
... lost it's whole upper memory. All diagnostic programs says that ... which also have had upper memory problems and the diagnostic programs ... ram. After changing faulty upper memory chips they have worked fine ... you needed to install 8 memory chips and few other chips ... -
DIVIDE PLUS - ZX bus protectorI make new ZX BUS PROTECTOR for use with DIVIDE PLUS interface. This is very small "convertor" for connection to new ZX BUS connector. PCB contain on…
... is disabled for external devices (only DIVIDE PLUS use external memory)
external device can't disable ZX ... replace ZX rom with extra memory pages)
[B]- ... as data protector only = external device can't collide on ... -
48k Out of memoryIv just had a 48k Speccy arrive today. The keyboard wasnt working right so I changed that. Now when I tried to load Cyclone it started to load ok fo…
... that reads 4 out of memory 30:1 I have no ... -
New memory model: 16K/48KAs earlier suggested in [URL="http://www.worldofspectrum.org/forums/showthread.php?t=32096"]this thread[/URL], there was also Spectrum software that …
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Today I added this memory model and with your help ... ://www.worldofspectrum.org/infoseekadv.cgi?memory=2&loadpics=1"]This ... -
Loading a screen in to memory...Hi Folks, I want to load a SCREEN$ in to memory and save it out to RAM disk without it being displayed on the screen. I am worried about over writi…
... load a SCREEN$ in to memory and save it out to ... worried about over writing BASIC memory so would the following work ... -
Testing memory/transistors etc with multimeterAnyone have a rough guide to show how to do this properly? Im using the diode setting on the multimeter to test various components, im touching the b…
... the corner pins on the memory etc, getting some steady readings ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct place
can it be altered on the toastrack and grey +2 to match the the +2a/b and +3? -
yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
... be only 4 bytes of memory left for programs to run ... br /> - start up code,
- memory management,
- task manager,
external and internal kernel. The one ... the microdrive shall be the external kernel (only small binary and ... -
DIVIDE with 512kB memory upgrade for saleI sell DIVIDE (original version 57c) with my memory upgrade to 512kB ram. [img]http://velesoft.speccy.cz/other/divide512-smallpic.jpg[/img] More in…
... (original version 57c) with my memory upgrade to 512kB ram.
I sell only divide with memory upgrade and plastic case. Not ... -
zx spectrum 48k loading issue (memory problem i think)Hi I have a 48k spectrum that until yesterday was working flawlessly. The spectrum seems to work fine but the problem is with loading games.All the …
... codes like 4 - Out of Memory ; B - Integer out of range ... told that could be a memory problem.
Is there a ... -
What memory pages are being used in a +3DOS disk operation?To make a long story short: what pages are in use by +3DOS while doing read operations from the disk drive? Now, for the details, for those interest…
... block is loaded into main memory, and then, the program starts ... to be loaded in "extended" memory. To avoid side effects, I ... to the end of main memory. A CLEAR 25000 is made ... use nearly all the available memory in all pages) succesfully? Do ... -
Memory card questionI recently decided to get a new phone (a Vodafone VF543) and i want to upgrade the memory so i can put all my music in it (the internal memory is onl…
... i want to upgrade the memory so i can put all ... music in it (the internal memory is only 50meg) but i ... no idea which type of memory card it will take. I ... -
Calculating free memory...Hi Folks, I am using the following method to calculate the amount of free memory available to BASIC: [CODE]PRINT 65536-USR 7962[/CODE] Is this the…
Hi Folks,
I am using the following method to calculate the amount of free memory available to BASIC:
[CODE]PRINT 65536-USR 7962[/CODE]
Is this the recommended approach?
Many thanks
Paddy -
External HD for PC and MacSomeone here will know the answer to this. I need to format several external (USB) Hard Drives of about 350GB each so they can be read on both a PC …
... /> I need to format several external (USB) Hard Drives of about ... -
Paper manuals - another casualty of modern times?I've just bought Alice: Madness Returns (about a fortnight back, actually, but I've not tried it until now) and it's another game that comes without …
... 8 bit games due to memory/external storage limitations, but nowadays that ... -
Backing up to an external hard drive.I've just brought a 500gig external HDD to backup some files. Not all of them, just the inportant ones (music, photos, a few films etc). It's a Seaga…
... 've just brought a 500gig external HDD to backup some files ... never backed up to an external HDD before. I know how ... -
Commodore 64 - First time trying - REVIEW & Pictures!Right, so the 2nd hand shop was selling this Commodore and accessories. So I decided to buy it, as I've never had a Commodore and this is my first ti…
... there is another input for external video.
I tried plugging ... complicated, you have to POKE memory to change colours! yaghgh!
How do I password protect an external hard drive?my laptop is 50gb, my new external hard drive is 500gb I dumped most of my personal files from laptop to external drive. my laptop is password prot…
... laptop is 50gb, my new external hard drive is 500gb
external drive.
my laptop ... do I password protect the external drive?
Is there ...Paging memoryI've been thinking about a possibility of paging blocks of memory to and from disk. Imagine dividing usable 32KB of Speccys RAM (why do they call it …
... possibility of paging blocks of memory to and from disk. Imagine ... it 48K, btw?) into 1KB memory blocks.
Each ... OS would attach bitmask of memory blocks that this process uses ... OS would compare process memory bitmask to the memory track from OS ...SP1 and memoryWhile developing my program, I've run into memory related issues and haven't (yet) run into any advice over how SP1 uses memory. The examples all sb…
... advice over how SP1 uses memory.
The examples ... some statically defined stuff in memory at some point above ... 50000.
What memory addresses should I avoid when ... br />
Generally, how much memory should I allocate with sbrk ...What memory address?If you poke 96 and 236 what would the memory address be? I've forgot how to work it out!!! :-?
If you poke 96 and 236 what would the memory address be?
I've forgot how to work it out!!! :-?A 30th Anniversary ProjectHappy new year (belatedly...) So with the 30th anniversary approaching, I've decided to do a hardware project to celebrate it. Something hands-on (o…
... clock for the counters is external since the Spectrum's clock ... gets halted every time contended memory is used (so isn't ... is fine (as is the memory, which won't be used ...How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... require I have as much memory available as possible. I'm ...Loading the display with data from memoryTrying to load part of the screen(4k's worth) with data from memory location 53000, I've written this routine, but it doesnt work... [I]ld b,4000 ld…
... 's worth) with data from memory location 53000, I've written ...Where to find (black) external 3.5" floppy drivesI'm searching like a maniac, but I can't seem to find 3.5" external drives of external drive enclosures anywhere. What I need: some single or dual e…
... find 3.5" external drives of external drive enclosures anywhere.
external 3.5" drives to ... />
Some possibilities:
- External Amiga drives, adding power to ... ) - these are available
- External MSX drives, but I can ...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…
... Issue 3 board, with upper memory chips (8xTI4532) and supporting logic ... does not see the extended memory. PRINT PEEK 23732 + PEEK 23733 ...Memory move routine?Hi Folks, I have been searching for the thread that covers the memory move routine that uses a$=b$ via DEF FN. I thought it was written by Battle B…
... the thread that covers the memory move routine that uses a ...Poking a string to memory...I'm looking to poke a string of characters including colour control codes to memory, I'm currently doing it by hand: 16,2,19,1,22,1,1,144 That equa…
... including colour control codes to memory, I'm currently doing it ...ZX81 Internal Memory UpgradeAnyone here ever done it? Im looking to add 16k of internal memory, pretty sure I know how to do it, just what parts do I need? (and where to get t…
Anyone here ever done it? Im looking to add 16k of internal memory, pretty sure I know how to do it, just what parts do I need? (and where to get them?)What if there was no memory or space limitation?What if there was no memory or space limitation? We've had topics about the limitations of the Speccy's hardware, topics where we discussed how good …
... a low amount of memory, how some programmers showed ... had an extreme amount of memory, paginated, at the ... if the available free memory was not a problem, ... but strongly believe that if memory wasn't a problem, ... a virtual amount of "memory" at our disposal. How ...
