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- Newsgroups: comp.sys.atari.8bit
- Path: sparky!uunet!caen!mtu.edu!jjmcwill
- From: jjmcwill@mtu.edu (Jeff McWilliams)
- Subject: Looking for source code from Analog
- Message-ID: <1992Dec30.065433.23008@mtu.edu>
- Organization: Michigan Technological University
- Date: Wed, 30 Dec 1992 06:54:33 GMT
- Lines: 38
-
- There is a program in the January 1989 issue of Analog called Edit Magic,
- which is for XL/XE machines. It copies the ROM OS into RAM, and then
- patches the EDITOR to do all sorts of neat things. Their version
- is obviously incompatible with things like SpartaDOS 3.2d, and
- TurboBASIC XL, and whatever else. But I am working on a hard ware
- hack that will place a STATIC RAM chip where the OS ROM normally resides.
- That way, you can copy the ROM OS to the SRAM chip, make modifications to
- the OS, and then disable the Write line to the RAM chip. From then on,
- it will act just like the Original ROM OS did. What's more, you can still
- access the normal RAM underneath the OS, just like you always did,
- so that it's compatible with SpartaDOS 3.2d, TurboBASIC XL, etc.
- I would like to get the source code to this Edit Magic program
- so that I can modify it and use it as a perfect example of the kinds
- of changes to the operating system you can make.
-
- This hack will appear in an upcoming installment of Moonlight workship,
- after I've debugged the circuit and done a thorough schematic design
- and write-up etc. While I am at it, I would like to petition readers
- to submit any other OS modifications that could be done to the SRAM-OS,
- like high-speed DISK SIO routines, remapped 1200XL function keys,
- hidden machine language monitor/debuggers, or whatever else.
- One could even replace the diagnostic code with say a printer configuration
- program that you call up with a special key sequence, where you could
- choose FONT, pitch, spacing, and whatever else before printing a document.
- Without divulging too much more about the upgrade, ( I do want you folks to
- read the column!!), you might be able to have about 16K of program space
- hiding in there as well, actually, if you keep the ROM OS enabled, you'll
- have 32K of program space!... anyway, so you could put some really
- nifty things into this upgrade. Ideas anyone? Gentlemen,
- start your assemblers! (varoom!)
-
- Jeff McWilliams
-
- --
- Jeff McWilliams jjmcwill@mtu.edu EE Engineer --> Michigan Tech.
- Leaves Turning, falling, withering
- Wind blowing, rustling, chilling
- candlelight will soon be flickering
-