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MyIDE for 800
Modified the layout. Now it
works with all drives!
I have made only one
prototype for a very good friend in the USA. He gave me a NTSC-jaguar, Atari 800
(48k),
Atari 410 and Atari 810 for in
return.
I'm sure we are both very happy with it. Below you can see a picture of
the cartidge I have build.
Knowingly that this is going to be a very rare
collectors-item someday ;-)
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To build it your own, you
need the
schematics.
I'm very sorry, but I don't have a list of
instructions of how to rebuild your OS-board. Best is to
remove the 2 left rom-chips and drill four holes above the far left to make room for a
28pins socket for the EPROM. Use the empty space to solder the needed wires (D0-D7,
A0,A2). Then make the interface on a small print and glue it face down onto the board
like I did (see pics below). For the OS you need a EPROM-burner. The single OS is 8k, the dual OS is 16k.
Please remember that you must leave the math-rom on the board ! |
Here are the schematics:
OS800Clu-layout
If you made a single-OS:
OS800Clu (2764)
You made the dual-OS:
OS800Clu+OS-B
(27128)
Modifications to hardware:
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Modify ROM-board to hold
28 pin EPROM
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Modify ROM-board to hold
a dual OS (OS800Clu and OS-B)
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Modify ROM-board to hold
a internal MyIDE-interface
OS800Clu first
release:
(I removed all: Cassette-drivers
& attractmode to make room for MyIDE-code)
Utility disk (fdisk etc)
- Fully compatible with XL/XE an
OS-A.
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Extra graphicmodes 12 through 15
(used on XL/XE)
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Boot from next drive if
it fails (D1: through D8:)
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Perform POWERUP
when SELECT is pressed during RESET
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Boot a disk-image
from harddrive when START is pressed on POWERUP.
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During 'image-boot'
-Move joystick (port 1) up/down to select image
-Press fire to boot it
When booted:
-Press SHIFT-CONTROL-1 for disk A. any other number for side X
(images have to be copied to harddisk in sequence)
Some nice pictures:
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Picture of the finished ROM-board
with MyIDE.
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A nice shot of the
opened system during debugging-fase.
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