There is this later "C" model that mainly shows 11 - 211 bytes free. Very occasionally, it will report 38911 (or something very close to that). I have not tried POKE-ing the expected normal BASIC values, to override the startup ramtas routine, but everything else is functioning fine.
Anyone want to take a stab at what the probable cause is? Bad RAM? Bad power? Poltergeist? Just curious.
If it is something that is "fixable", please advise. I wouldn't mind spending some money on this particular unit.
Or, has anyone used its chassis as a mod for their VIC 20? This case/keyboard is in mint condition, and it would be a shame not to be able to put it to towards some "practical" use.
C64 reports xxx bytes free
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- Omega Star Commander
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- Omega Star Commander
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There's only a few socketed chips, and all are tightly seated; I suspect the RAM is soldered to the "mobo".
Interesting, if I power it up cold, it instantly displays and reports anywhere from 11 - 8099 bytes free. But after, if I quickly shut it off-and-on, it takes the expected 2-seconds to display and report all 38911 bytes free. Could that be a capacitor not charging fully from a cold start?
I took photos if anyone wants a looksee:
WHOLE
LEFT
LEFT-MIDDLE
RIGHT-MIDDLE
RIGHT
Interesting, if I power it up cold, it instantly displays and reports anywhere from 11 - 8099 bytes free. But after, if I quickly shut it off-and-on, it takes the expected 2-seconds to display and report all 38911 bytes free. Could that be a capacitor not charging fully from a cold start?
I took photos if anyone wants a looksee:
WHOLE
LEFT
LEFT-MIDDLE
RIGHT-MIDDLE
RIGHT
Last edited by rhurst on Sat Feb 07, 2009 1:42 pm, edited 1 time in total.
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- Vic 20 Hobbyist
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Those are standard 4464 type DRAM chips. I have them on my website if you need some.
RJ
RJ
Call me a cheap bastard... I learned to fix things to save money... even surface mount soldering...
Visit my website: http://www.arcadecomponents.com
Visit my website: http://www.arcadecomponents.com
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- Omega Star Commander
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- Website: https://robert.hurst-ri.us
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- Occupation: Tech & Innovation
Thanks for all the replies ... I will get and put a volt meter on it. If the reading is nominal, I suppose I need to then de-solder them from the board, and get replacement chips ...
Let's see, I have this close friend, VIC, that has to take care of his older brother, who is showing signs of dementia ...
.....and how does this fit into Vic-20 hardware section?
Let's see, I have this close friend, VIC, that has to take care of his older brother, who is showing signs of dementia ...