|STLabs, an ATARI
16/32 computers hardware lab!
This page concerns
MSTIDEM, a hardware upgrade I designed
ATARI MEGA ST computer.
MSTIDEM (Mega ST IDE Memory) CARD
- 512KB flash ROM allowing
dual-TOS or cartridge operation. Here are the possibilities :
TOS 2.06 + 192K TOS 1.X
- 256K TOS 2.06 + 128K
cartridge (where you can put 128K of your
alternative OS (like Emutos for which an IDE driver needs to be written
in any case, a 64K area is
reserved for a BIOS-like bootloader
TOS 2.06 is necessary to enable the IDE function
- ATA-IDE interface suitable
for silent Compact flash cards as well as conventionnal harddisks,
including 2.5" and 3.5" connectors and a 2.5" hard disk place holder.
- memory upgrade (Alternate
Fast-Ram at 8MHz) up to 16-4-1 = 11Mb on top of
- USB-slave UART and 7 general
purpose I/Os for hobbyists.
- no cut in the MEGA ST
mainboard, only a few additionnal wires to be soldered for clock and
for IDE interruptions.
- 2007/02 : 5 PCBs sent for fabrication
the hardware design is in final
but not debugged
The programmation logic has not yet begun
- Flash bootloader interface for
TOS/cartridge and alternate memory configuration (BIOS-like)
- user friendly in system flash programming software
A prototype PCB was
sent for fabrication in China, I am waiting for 5 cards back.
contact : stlabs