Denial

Ouch, sorry to hear about the new problems you got. The ram I got was labeled NEC 8402A5 μPD2114LC Those *are* SRAMs. However, I've seen photos of NEC µPD2114LC in the 'net with '-5' behind the type, i.e. 500 ns. If there is no indication of access time behind a hyphen, this most probably means you ...

I thought it might be a good idea a post a working solution before this thread dies of old age ... 10 FORT=828TO951:READA:POKET,A:NEXT:SYS828 11 DATA 120,169,83,141,20,3,169,3,141,21,3,173,3,144,41,128,9,48,141,3,144,88,96,216,56 12 DATA 165,51,229,49,133,251,165,52,229,50,133,252,248,169,0,133,3,13...

craftsman1234 wrote:5378

That's in the range of 5120 to 6143, provided by the two chips UE4 and UD4. Furthermore, the sticky bit is located in the upper nibble, so this must be UE4 at fault. I would set a socket and replace it rightaway, no point in further checking with the piggyback method you mentioned.

two prong power supply O.K., then the 5K internal RAM consist of ten 2114 SRAMs. An additional 2114 SRAM holds the 1K nibbles for the colour RAM, but this one is not affected. If you are using no expansion is the test the same? The program only tests the internal memory in the range 4096 to 8191, n...

If there was a hard RAM fault, the RAM test routine in the OS would end up in an endless loop (blank white screen with cyan border). There are also other types of RAM faults, where the bit cell 'forgets' the correct value, albeit only after a few µs, which would go undetected by the RAM test routine...

How about now? Pleas[e] look if this look better. Yep. Great! Works now. Thanks! :D Is the initial URL [...] going to stay the same or do we need to update our bookmarks? I suppose so. Not only did Jeff mention this in the topic 'If you link to Denial, please link to the front page.' (with the give...

The PROM chips on the cartridges are pin- and signal-compatible to the 23xx series. With an adapter socket or some re-routing on the cartridge PCB, 27xx EPROMs can be made to work. You should check out the FE3 (Final Expansion 3) project. It uses two microcontrollers: one of them provides a SD2IEC d...

Erm, When i do a search on Minipaint, it shows this post as the last (page 5): [...] if I didn't make that clear enough: all expected search results for that particular example from May 2010 to Nov 2013 are missing . And I could easily find lots of other keywords, which won't give any result in that...

After 2010, Jeff had to prune the search database for space reasons. It would be good, if it could be rebuilt from the current text base. 2. Search database is indexed now. Does not seem to be quite the case, though. For an example, a search for 'minipaint' only turns up postings until May 11, 2010...

Here's a draft of a refurbished VIC-20 logo for Denial, with the perspective being correctly applied this time: https://dateipfa.de/.Public/denial/images/tools/vic-20.png I can replace the cyan background with any other background colour, and would also add in the Denial caption. Internal links will...

As Parkinson's last law states, postponement is the deadliest form of refusal. If this had been a real prototype of WoW, I suppose the people concerned would have pulled out all the stops to confirm its existence. OTOH, if it wasn't the case, the natural reaction - after causing all the fuss - would...

Nigel, regarding news for the VIC-20, just take a look at the newest postings in the Announcements section. There have been a quite a lot of interesting developments in the last few weeks. They're already there, literally on a silver platter. Those announcements are however usually quite short, and ...

Noted but I have yet to come up with a behaviour that is useful. I guess it will have to adapt to the actual pixel shown. It doesn't do that now. The cursor in MINIPAINT is a frame around the current pixel. It is drawn from the two global colours which have the lowest and highest brightness, respec...

I see. Scheduling the instructions should already be quite difficult as is. ... For another few things: - I could make fcbpaint crash by tapping RESTORE several times in the preview. Upon returning to the editor, the VIC-20 would end up in a perpetual warm start of BASIC (a blinking 'READY.' in the ...

Hi, -- in some cases splits as close as 2 or 2.5 chars apart are allowed. from what I gathered, the placement of split 2.5 chars apart relies on the ZP being initialised to $00 .. $FF. That means a load instruction which would normally take 2 cycles in immediate mode can be replaced by one on the ze...