$150) How nmany keys are on a standard Commodore B-128 keyboard?
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$151) How many revisions of the 1541 printed circuit board are
known to exist?
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For the 1541:
PCB# 1540001 The "long board", as used in the 1540.
PCB# 1540008-01 Minor revisions to the 1540001 board.
PCB# 1540048 The "short board".
PCB# 1540050 Minor revisions to the 1540048 board.
-01 ALPS mechanism
-03 Newtronics mechanism
PCB# 250442-01 A revision of the short board. 1541 A board
PCB# 250446-01 Minor revisions to the #250442 board, 1541 A-2 board
PCB# 250446-03 Cost reduced 250442-03 board. the 1541A C/R.
For the 1541C:
PCB# 250448-01 Contains the track 1 sensor logic. the 1541B board.
For the 1541-II:
PCB# 340503 Cost reduced board. Termed the 1541-II board.
There might be others, but these we can confirm. There are 9
if you count the 1541-II board as a 1541 board, 8 if not.
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$152) The Commodore 6510 CPU has two internal I/O registers. Where in the
Commodore 64 are these two registers located at?
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$153) The Commodore 64 cotains 64kB of memory. How many bytes is in
64kB?
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$154) What is the name of the Commodore employee responsible for much of
the Commodore 128 and 65 software development, among other
accomplishments? (hint: initials are FB)
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$155) In question $13F, we found out the message that was displayed after
typing SAVE "",2. Why did Commodore change that message on the
VIC-20?
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The original message, as detailed in Q $13F was:
PRESS PLAY AND RECORD ON TAPE #2
Commodore found that people were pressing the play buttopn BEFORE the
record button, which would prevent the record button from functioning
in some cases. So, Commodore changed the message to:
PRESS RECORD AND PLAY ON TAPE
To circumvent the problem. Note that the VIC did not have 2 tape
interfaces, so no cassette number was needed.
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$156) What was the number of Commodore 64 machines sold, within 4 million?
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17 million (This information came from Dave Haynie)
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$157) What was the number of Commodore 128 machines sold, within 1 million?
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4.5 million (This information came from Dave Haynie)
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$158) In 1985, Commodore previewed the Commodore LCD Laptop computer at the
January CES show. How many software packages were to be built-in?
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8:
Word Processor
File Manager
Spreadsheet
Address Book
Scheduler
Calculator
Memo Pad
Telecommunications Package
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$159) In the Commodore LCD unit, what were the text screen dimensions?
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80 coumns by 16 rows. 1200 characters on screen.
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$15A) What is the version number of the only known "bug-free" VIC-II
IC?
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6569-R5. What's funny is that this chip was manufactured after
the Commodore 128 was introduced, so they used the 6569-R3 for the
development of the Vic-IIe chip (8563 series), which is buggy.
So, the newest PAL 64s have a better VIC than the C128.
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$15B) Machine language programmer typically use the .X register to index
into small arrays. What is the largest byte-array size that can be
handled in this way?
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$15C) In the mid-1980's, Commodore started manufacturing IBM clone PCs.
One of the models had a name which was a type of horse. Name the term.
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$15D) What is the model number of the first mouse introduced for the
Commodore 64?
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$15E) What was the problem with the mouse in question $15D?
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As Commodore was either still developing the (now more
popular) 1351 mouse or the 1350 was designed as a lower cost
alternative, this mouse could only emulate a joystick. When you
rolled it up, the joystick "UP" pin was triggered. Likewise for the
other directions.
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$15F) If you hold down the cursor key on the CBM 4000 series machine and it
does not repeat, what fact about the machine do you now know?
(other than the key doesn't repeat)
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It is a thin 40XX machine, meaning it could not be upgraded to an
80XX machine via chip swaps.
The information in this between the lines marked by (BEGIN) and (END)
is copyright 1995 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 using this file, please contact the address
shown below.
Jim Brain
j.brain@ieee.org
10710 Bruhn Avenue
Bennington, NE 68007
(402) 431-7754
--------Commodore Trivia Edition #22 Questions and Answers (END)---------
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