Denial WIKI change / addition announcement thread.
Are you aware of this somewhat "hidden" directory on Zimmers?
http://zimmers.net/anonftp/pub/cbm/sche ... index.html
Wolfgang Günther in 1999 posted the VIAs should be at $9200 and $9210. Also check the schematics. What does CHKD and ENGR mean, checked and engraved? At least we know what K. Takagi did on Feb 5, 1981.
http://zimmers.net/anonftp/pub/cbm/sche ... index.html
Wolfgang Günther in 1999 posted the VIAs should be at $9200 and $9210. Also check the schematics. What does CHKD and ENGR mean, checked and engraved? At least we know what K. Takagi did on Feb 5, 1981.
Anders Carlsson
Ah, yes I did see that directory and had meant to post the schematics to the Wiki. Thanks for reminding me. As for those addresses, and the codes in the schematic - that's my weak point - technical details! I'm a historian by trade - I need support with the techie bits!
Also, the first SYS in the instructions in that article looks strange (it has an apostrophe in it). Is this valid, or an error from when the document was OCR'd (I can't remember where I got this text file).
Also, the first SYS in the instructions in that article looks strange (it has an apostrophe in it). Is this valid, or an error from when the document was OCR'd (I can't remember where I got this text file).
Thanks. First of all I should clarify. My degree is in Anthropology and Museum Studies, I've worked in museums for the past 13 years and I also do collections work & manage a small archive. So I'm heavily involved in the field of history/historic presentation. Sometimes it's just easier to say "historian" than describe all that - but strictly speaking, my degree is not in history - although more the management of historical items/information.Jeff-20 wrote:I can't believe how lucky Denial has been. To have someone familiar with historical method is priceless to the hobby!ral-clan wrote:I'm a historian by trade. . .
Regarding the Wiki: If I was able to do everything properly, all information would be backed up against a source with footnote references. But unfortunately, that's not always the case.
i.e. many of us here on Denial were also VIC-20 owners in the early 1980s. We KNOW that most VIC-20 owners back then had datasette drives, and that disk drives were FAR less common. Even though we all "know" this to be true, if the Wiki was a real academic paper, I wouldn't be able to actually include this statement unless I had some sort of hard resource to back this up (i.e. a published statistical study between datasette & 1540 owners or a historical quotation from someone in Commodore's sales department).
However, in reality, the information on VIC-20 history is much more vague and scattered. If I had to write only things that could be linked to a reference then nothing would ever get written.
So there has to a be a compromise. If we can't back up a statement with a reference, then at least we should make "safe" statements about the hardware and hope that any outrageous or erroneous statements will quickly get "called" and corrected by readers.
So, while less than ideal, it's still important. The Wiki is, I think, the first attempt to actually get all the historical information about the VIC in one place (Ward Shrake did something similar but I think his focus was on archiving the ROMs and less on historical information about things like case variations, product development, etc.). Anyway, I view the WIKI as a natural extension of Ward's work.
And just to remind everyone here - ANYONE can add to / edit / correct anything on the Denial WIKI at any time! It's your right!
Last edited by ral-clan on Wed Feb 11, 2009 8:15 am, edited 1 time in total.
- orion70
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I'm no historian, but I know history can be written, or handed down from one generation to the next by telling the direct experience to the younger members of the family .ral-clan wrote:many of us here on Denial were also VIC-20 owners in the early 1980s. We KNOW that most VIC-20 owners back then had datasette drives, and that disk drives were FAR less common. Even though we all "know" this to be true, if the Wiki was a real academic paper, I wouldn't be able to actually include this statement unless I had some sort of hard resource to back this up (i.e. a published statistical study between datasette & 1540 owners or a historical quote from Commodore's sales department).
There was a time, my son, when people could only afford a Datassette, and no one had RAM expansions...
Ah, you're right. "Oral history" has an important place in historical research nowadays.orion70 wrote:I'm no historian, but I know history can be written, or handed down from one generation to the next by telling the direct experience to the younger members of the family .
There was a time, my son, when people could only afford a Datassette, and no one had RAM expansions...
Tweaking the VIC-20's video output:
http://sleepingelephant.com/denial/wiki ... djustments
I compiled this info from postings on Denial, so please, anyone with more technical knowledge feel free to edit the article.
http://sleepingelephant.com/denial/wiki ... djustments
I compiled this info from postings on Denial, so please, anyone with more technical knowledge feel free to edit the article.
VIC-1211A Super Expander article started:
http://sleepingelephant.com/denial/wiki ... r_Expander
As always, input from & editing by more technically knowledgeable people is welcome.
http://sleepingelephant.com/denial/wiki ... r_Expander
As always, input from & editing by more technically knowledgeable people is welcome.
It should probably go on the Discussion page, but exactly how common is the Super Expander? Given that some of us in recent years have owned a handful or more at the same time, it must have been reasonably common already back in the days. However I agree it wasn't common enough for 3rd party software houses to rely on people owning one.
Anders Carlsson
Article on RF-modulator improved:
http://sleepingelephant.com/denial/wiki ... _Modulator
However, I have no knowledge of how PAL modulators work, or how it works with SCART TVs. Can anyone fill me in?
I don't even know if they broadcast on channels 3 and 4 like NTSC ones did.
http://sleepingelephant.com/denial/wiki ... _Modulator
However, I have no knowledge of how PAL modulators work, or how it works with SCART TVs. Can anyone fill me in?
I don't even know if they broadcast on channels 3 and 4 like NTSC ones did.
PAL modulators generally output on UHF 36. There are a few exceptions but the VIC-20 one definitely operates at UHF frequency.
As for SCART, that would just be a variation on the composite video cable, using a different connector on the TV end. SCART has no antenna input function, just composite, S-Video and/or RGB inputs.
As for SCART, that would just be a variation on the composite video cable, using a different connector on the TV end. SCART has no antenna input function, just composite, S-Video and/or RGB inputs.
Anders Carlsson