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Who wrote this stuff?
This trivia was originally written by Jim Brain as part of the now long defunct C= Hacking Magazine, but happily Jim has kindly agreed to let me reproduce it in HTML-ized format for retro computing fans everywhere.

If you are interested in seeing the Commodore Trivia digests in their original form, take a look at this website.

For those who are interested, these pages were generated from the original text files using Perl and Velocity (and a nice template originally found here)

 
TRIVIA 36A

$230)
	What control character would one send to a Commodore printer
        to start double-wide character printing?
     	

	On the 1525 (and successors, like MPS 801, MPS 803, etc), chr$(14)
        was used.  A few IEEE printers also contained chr$(1), which printed
        'enhanced' double wide characters.

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$231)
	What control character would one send to a Commodore 1525 printer
        to inititiate graphics mode?
    	

	chr$(8)
     

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$232)
	What control character would one send to a Commodore printer to
 	end double-wide character printing?
     	

	On the 1525 (and successors, like the MPS 801 and 803), chr$(15) was
        used.  On the IEEE printers and the 1526/MPS 802 (a 4023 IEEE printer
        with serial bus connection, chr$(129) was used instead.
     

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$233)
	How many registers does the VIC-I (6560/61) IC possess?
     	

	According to Commodore, the 6560/1 IC contains 16 addressable control
        registers, which is the number we were looking for.  How many registers
        are actually used internally is anyone's guess.  We also accepted 26
        as the answer, since there are 26 differint configuration fields 
        within the 16 bytes of memory mapped I/O.
     

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$234)
	How many registers does the Plus/4 TED IC have?
     							    

	Multiple answers exist for this question as well.  The TED contains
        addressing to support 64 I/O registers, but only 34 are used. 
     

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$235)
	We all know the 1541 stores its directory on track 18.  Where does
        the IEEE 8050/8250 stores its directory?
     	

	Track 39.
     

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$236)
	If a program opens a channel to tape, reads some data, and a check
        of ST AND 32 is true, what error does that indicate?
     	

	checksum error.
     

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$237)
	Depending on how many memory was added to a VIC-20, BASIC could
        start in one of three locations.  Name them.
     	

	1024, 4096, or 4608.
     

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$238)
	Commodore's first floppy drives used what brand of mechanisms?
     	  

	Shugart.
     

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$239)
	If one sees a directory listing that starts with:
        "MY DISK OF STUFF,MY,2C"   What CBM drives could have wrote this
        disk?
     	

	8050 or 8250 or derivatives: 8250LP and SFD 1001.
     

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$23A)
	Name a color available on the VIC-20 that is NOT available on the 64?
     			   

	Any of the following qualify:
        
        o Light Orange
        o Light Cyan
        o Light Purple
        o Light Yellow
 
        By the way, none of these colors can be used for text.
     

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$23B)
	Name two CBM computer series that used a real 6551 UART to do
        serial communications.
     	

	The Plus/4, the B128, The 700 Series.  I suspect the 600 and 500
        Series as well.
     

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$23C)
	On the Commodore SX-64, is drive 0 above or below the built-in
        storage bin?
     	

	It is below the storage bin.  For those who created a DX-64 (2
        drives, the standard placement is to instal Drive 1 above drive 0.
     

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$23D)
	Without looking, which key is located to the direct right of the 
        semicolon ';' key on the C64?
    	

	With exception to the Swedish 64, The equals '=' sign. On Swedish
        models, the return key sits next to the ';' key.  On Swedish
	keyboards, the key placement of the rightmost 4 columns is altered.
     

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$23E)
	What does drive error number 72 mean?
     	

	Disk Full or Directory Full
     

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$23F)
	What was the model number of the first serial drive Commodore 
        developed?

	Technically, the 1010 was the first unit, but I have no reports
        it ever made it past prototype stage.  And I doubt it was serial.
        The 2040 would qualify, but it was parallel (IEEE 488).  Therefore,
        the VIC 1540 is the first CBM drive to fit the criteria.
     
The information in this between the lines marked by (BEGIN) and (END)
is copyright (c)1997 by Jim Brain.  Provided that the information
between the (BEGIN) and (END) lines is not changed except to correct
typographical errors, the so marked copyrighted information may be
reproduced in its entirety on other networks or in other mediums. For 
more information about this contest or using these questions, please 
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