A 500 Motherboard Revision 6A
KICKSTARTS:
1.2
1.3
3.1 Available only as an upgrade
ROM chip was a 40-pin DIP.
CPU:
68000 at 7.14MHz
FPU:
none
CHIPS:
Denise - 8362 Denise
Paula - Standard Paula
Agnus - 8370 for REV3 and 5 Motherboard
8372A in REV6 Motherboard
Gary - Fat Gary
RAM:
CHIP RAM 512k on motherboard
512k in trapdoor expansion can be converted to CHIP RAM
by modification.
FAST RAM none shipped with machine.
The 512k expansion in the trapdoor configures as FAST RAM
but only runs as fast as CHIP RAM due to the bus limitation.
Maximum autoconfigging RAM in this slot is 2.3 MEG.
PORTS:
15KHz Video
External Disk drive
Parallel Port
Serial Port
Mouse/Joystick ports
5-pin Square DIN Power Port
Left and Right RCA Audio
SLOTS:
1 86-pin external expansion slot on the left for hard-drives,
RAM expansion, digitizers, etc.
1 Trapdoor RAM expansion underneath
MOTHERBOARD REVISIONS:
3.x Avoid
5 8370 Agnus
6 8372A 1 Meg Agnus
Thanks to Greg Scott (National Amiga)