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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…
... the lower 16K.
You can buy off the shelf replacement RAM ... -
ZX48K: KILLING keyboard membrane?Hi. My friend - JAD - decided to get back from C64 to ZX Spectrum 48K after some break (that's the man who coded this program [url]http://www.pouet…
1. Likely, lower RAM and/or the internal ... that you have dead 4116 memory.
2. Less likely, but ... -
Tale of two SpectrumsHi All I have two 48k Spectrums, along with two different tape recorders. Now, one Spectrum will load everything from both recorders, and the other…
... /> Thanks, problem resolved now, bad memory :( replacement on its way :) -
What model next ?Hi All I already have two 48k rubber kyed 48k Spectrums and a Grey +2 What to get next. ZX Spectrum + ZX Spectrum 128 Toast Rack ZX Spectrum +3
... chip PAL/HAL10H8 with new replacement GAL16V8 with fixed internal structure ... reprogrammable chip and can correct memory layout to +2A mode also ... GAL16V8 for fix ZX128/+2 memory layout (as on +2A). But ... -
What model next ?Hi All I already have two 48k rubber kyed 48k Spectrums and a Grey +2 What to get next. ZX Spectrum + ZX Spectrum 128 Toast Rack ZX Spectrum +3
... chip PAL/HAL10H8 with new replacement GAL16V8 with fixed internal structure ... reprogrammable chip and can correct memory layout to +2A mode ... +2A/+3)
- new memory layout for slow and fast ... videoram is fixed (disable slow memory in refresh cycle). Rom paging ... -
I wonder how many still goingThere is always a healthy stock of 48k rubber keyed speccys on eBay. However whats the guess on the amount world wide that are still working/used? +…
... the flakyness of the 4116 memory (possibly exacerbated by the design ... 't have the complication of memory that expires with the slightest ... all showing symptoms of bad lower RAM - well, except the one ... -
Issue 2 Speccy faultHi Guys, I'm really hoping someone can help me with a fault that has just developed on my issue 2 speccy. After perservering for some time with usi…
... or more of the lower 16K memory chips shorting. These 4116 ... rest.
Higher Memory Faults
These problems often ... To check that the entire memory is operational enter the following ... 16K model. Any shortfall (lower number) indicates a memory fault. -
Dumb question but deep answer wantedWhy is the ram on the 48k made up of 8 chips. Both upper 32k and lower 16k (4116) are set up like this. Taking the 4116 as an example this us a singl…
... handle 1 bit of every memory location, is a better setup ... of the memory area. Basically: fewer IC pins in total (=lower cost ... -
Upgrading 16k MemoryHi All I have a fully working issue 2 16k spectrum and a broken issue3 48k spectrum (It's showing the black and white bars and some flashing blocks)…
... IC26), but no upper 32K memory chips & see if Spectrum ... IC's inserted and insert memory chip, try all but ... chips: add back the memory chips 1 at a time ... way you can find specific memory chips that prevent the Spectrum ... (74HCT family is a good replacement). -
New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…
... runs slower and uses more memory. :D Indeed, it's not ... authors of those. On a lower level, those routines in fact ... -
Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …
... library") and my concerns about memory usage have pushed me back ... to move some data into lower conteded memory in the Sid Spanners ... /> I'm learning to save memory though. For instance the level ... data in a much more memory-efficient way and hopefully the ... -
Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …
... was very conscious about the memory usage and pretty much ... possible to choose a less memory hungry engine in exchange ... is carefully planned from a memory conservation standpoint from the ... to move some data into lower conteded memory in the Sid Spanners ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... the DRAMs for video memory. The original memory isn't fast enough ... about the page mode, but lower quality soviet clones of 4164 ... -
repaired a 48K, yay :)I just managed to repair one 48K. After socketing all eight lower RAM chips (hard work!) and replacing few of them, it showed the familiar "Sinclair …
[QUOTE=Robin;505619]this SRAM replacement, can it be done to ... ; there) as replacement for Spectrum DRAMs? Either for lower or upper RAM ... work, you could replace the lower (or upper) RAM with just ... -
Where's it all going?[Rerouted from 'Assembler Intricacies' in Development Forum] [QUOTE=Timmy;506104]I don't think we're in disagreement here. As I've said it's a niche…
... have an equal, if not lower, boredom threshold. Yet the majority ... compiled C any time, for memory and speed. It's funny ... -
Where's it all going?[Rerouted from 'Assembler Intricacies' in Development Forum] [QUOTE=Timmy;506104]I don't think we're in disagreement here. As I've said it's a niche…
... in asm. As amount of memory increases and more sophisticated options ... have an equal, if not lower, boredom threshold. Yet the ... trade-off is more in memory consumption but speed will ... underneath so even background and lower priority sprite graphics don't ... -
Speccy 128 Shadow screen.How much is the shadow screen used in 128k commercial software? I ask because I am looking at putting 128k of memory in the 48k setup I have been bu…
... 48K Spectrum a 128K Spectrum memory model? If you are, then ... 16K ram with a 64K memory bank (all of it is ... 32K RAM with another 64K memory bank, plus a bit of ... interested in knowing how the lower bank in such a layout ... is the rest of the memory, so i'm trying to ... -
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…
... /> Another important thing related to memory management is relocation.
( ... before jumping into the real memory allocator [URL="http://z88dk.cvs ... ignore it. Messing with the lower 7 bits of R could ... spaces there is not enough memory to support more than ... -
How the spectrum generates the video from ramHi everyon, I know that most people here allready know this but i think i found out how the spectrum acctually dispalys stuff and why the LD x, (HL)…
... ram gets dedicated to program memory and OS. Ideally i want ... need to assign the lower chunk of main memory as video ram ... -
How the spectrum generates the video from ramHi everyon, I know that most people here allready know this but i think i found out how the spectrum acctually dispalys stuff and why the LD x, (HL)…
... some other area than the lower 16K, there is no conflict ... is the master of the lower ram and even takes care ... their contents, all rows of memory must be accessed with a ... -
Some TAP files not working on DivIDEOne of the people who ordered a DivIDE from me told me het can't load certain TAP files, which load perfectly on emulators. I have encountered that …
In [URL="http://velesoft.speccy.cz/zx/divide/divide-memory.htm"]this [/URL]page (bottom) it says that only R GAL needs replacement with R'' GAL in order to be able to enable allram. -
Speccy 128 Shadow screen.How much is the shadow screen used in 128k commercial software? I ask because I am looking at putting 128k of memory in the 48k setup I have been bu…
... work out if the extended memory mode is any use either ... original 48 rom in the lower 16k bank so I could ... -
Was the +3 a missed opportunity?I just wanted to gauge WOS opinion on this. Do people think that the +3 was a bit of disappointment that didn't really advance the hardware as much a…
... one drive belt and a replacement 74ls04 since i got it ... /12v supply fails and the lower ram burns out! :smile ... -
Gigascreen - programming guideDoes anyone know of a programming guide for the 128K gigascreen screen mode, specifically a persistence colours table, some code (pref. C level or BA…
... Spectrum and using the extended memory and screen flipping. It's ... is going to go in memory
entry_point ;A ... , with screen 1 in high memory
HALT ;Wait for ... BC,32766 ;Input port for lower-right 5 keys
IN ... -
Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... relatively slow (read: cheap) memory. To achieve it, ULA uses ... mode reads operate in consecutive memory addresses.[/QUOTE]
I ... operation" when it makes ULA memory access NON-sequential :)
... old soviet computers using lower quality clones of the same ... -
Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... addresses for a screen memory plus an attribute memory that is 1 ... small as possible to save memory for 16K
2) to ... per cell) represented by the lower address byte:
[code]
lower byte are equal.
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 …
... speccy to try to identify lower or upper ram and im ... , and 32830. Running fruitcakes 128 memory diagnostic give me bad ram ... be IC19, or if its lower, IC10, thats the thing, how ... tell if its upper or lower, im missing something obvious as ...Persistant tape loading error*big cheery wave* Got myself an ebay 48k rubber key speccy recently. Seems to be working ok, excpept for tape loading errors. Tried from a few sour…
... !) IT WORKS! (amazing how much memory of how to play the ... MP3 player. Sound level was lower than the physical tape, but ...Smooth (vertical) scrolling on ZX SpectrumI was just thinking about this. You know, you have systems like Atari 2600 or Sega SG-1000 that have no hardware scroll, but they have games that sti…
... in situ in the screen memory, whilst drawing the game sprites ... full colour. Although at a lower frame rate.A thousand core CPU?Maybe this is old news to most people on here, but according to: [url]http://www.zdnet.co.uk/news/emerging-tech/2010/12/25/intel-why-a-1000-core-chi…
... with a good amount of memory but only a P3- ... is installed by Halo.)
Memory: 128 megabytes (MB) of RAM ... 1.8 or 2.x (lower end) Pentium 4, although to ... Drive: 4.5 GB
Memory: 256 MB RAM
... br /> 256 MB
Video Memory:
64 MB
Hard ...
