Multi-apps on an eprom for U36

Started by RobertB, October 15, 2008, 12:37 PM

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RobertB

     In the topic, Basic 7.1, mention was made of burning multiple applications on an eprom for the U36 socket (the empty socket) of the C128.  The trouble with getting multiple apps on such an eprom is finite space.  The biggest, a 27C512, only has 64k of space.  Therefore, one huge program of 64k can occupy that space, or we can divide that space so that multiple programs can reside there, accessible by flicking a switch.  What I need to know is what C128 apps can be put into such a multi-app eprom.  Then with this knowledge, I can go to an eprom guru, like Al Jackson of the Clark County Commodore Computer Club of Las Vegas, Nevada, and ask him to burn such an eprom.  With Al's help, then we can share the process (triumphs and pitfalls) with everybody here in the forum.
    O.K., feel free to add to the app list below, but remember the memory constraints:

32K programs that can fit in a 27C512 divided into two 32k blocks:
GEOS 128 v2
Basic 8
Servant
KeyDOS 2.3
(according to Al, the last two can theoretically reside together on the same eprom)

16K programs that can fit in a 27C512 divided into four 16K blocks:


8K programs that can fit in a 27C512 divided into eight 8K blocks:



                Straight talk,
                Robert Bernardo
                Fresno Commodore User Group
                CommVEx v5 info - http://www.commodore.ca/forum and click on ComVEX




RobertB

Quote from: RobertB on October 15, 2008, 12:37 PM
...I can go to an eprom guru, like Al Jackson of the Clark County Commodore Computer Club of Las Vegas, Nevada, and ask him to burn such an eprom.
Thanks to Al for sending me the "Eprom Programmers Handbook for the C64 and C128", written by Bill Mellon; and the Promos instruction book.

              Truly,
              Robert Bernardo
              Fresno Commodore User Group
              http://videocam.net.au/fcug

Golan Klinger

Quote from: RobertB on October 17, 2008, 07:26 AM
     Thanks to Al for sending me the "Eprom Programmers Handbook for the C64 and C128", written by Bill Mellon; and the Promos instruction book.

You mean the EPROM Programmers Handbook for the C64 and C128 that anyone can download here?
Call me Golan; my parents did.

RobertB

     Update --

32K programs that can fit in a 27C512 divided into two 32k blocks:
GEOS 128 v2
Basic 8
Servant
KeyDOS 2.3
Super Chip

16K programs that can fit in a 27C512 divided into four 16K blocks:


8K programs that can fit in a 27C512 divided into eight 8K blocks:


                  Truly,
                  Robert Bernardo
                  Fresno Commodore User Group
                  CommVEx v5 info - http://www.commodore.ca/forum and click on ComVEX

RobertB

Quote from: me on October 17, 2008, 07:26 AM
     Thanks to Al for sending me the "Eprom Programmers Handbook for the C64 and C128", written by Bill Mellon; and the Promos instruction book.
Hey, Mark "Airship", if you don't have these books already, would you like to me to send you some copies?

               Truly,
               Robert Bernardo
               Fresno Commodore User Group
               http://videocam.net.au/fcug

airship

Quote from: RobertB on October 28, 2008, 04:49 AMHey, Mark "Airship", if you don't have these books already, would you like to me to send you some copies?
Thanks for the offer, Robert, but I just went ahead and downloaded the PDF.

While I love the old stuff, if I can get a PDF I generally prefer it these days. I have so much junk already... :(

I do really appreciate the offer, though.
Serving up content-free posts on the Interwebs since 1983.
History of INFO Magazine

jsixis

 Dan Newbury has a rom with lot's of programs on it. I have not boaught it yet due to lack of excess funds (always something in this 110 year old house). I thought I found his link here.
newbury@planetkc.com

jsixis

 I can't figure out how to download that PDF. Any chance someone can email it to me?
idiot@columbus.rr.com