+---------------+
| |<----------------------------------------------------------------------------------------------+
+---------------+ |
|
+------------------------------------------------------------+ |
+--->+------------------------------------------------------------+ |
+------------+ | +------------------------------------------------------------+ |
| | | +------------------------------------------------------------+ |
| RMC |<------+ MEMORY BANK |
| | | +------------------------------------------------------------+----------------+ |
| | +--->+------------------------------------------------------------+----------------+ |
+------------+ +------------------------------------------------------------+----------------+ |
A +------------------------------------------------------------+----------------+ |
| |
V |
+--------------------------------+ +-----------------------------+ +-----------------------------+ |
+--------------------------------+ +----------S B U S------------+ +-----------------------------+ |
+--------------------------------+ +-----------------------------+ +-----------------------------+ |
A |
| |
| |
V +----------+ |
+-----------+ +-------+ | | |
| | / |<------------------------+-->| |------------------------+
+------+ | |<----->| SEC | | | N82077SL |
|DBRI |<------>| MIS | | | | | |
| | | | +---------+ +--------+ | +----------+
+------+ | |<--------~ | ~---------> / | |
| +-----------+ | u0705 | MACIO |---+ |
| | +--+<-->| | | | +---------+
| +-------------------- ~| ~--| | +----------+ | | +---> |> NVRAM |
| | V +--+ | | | | +---------+
+----+ | +----+ +----+ V | +----------+
| | | ZILOG | +------+ | | +-----------+
| | | Z85c3008 | |T7213C| | +---> |> EPROM |
| | +----+ +----+ +------+ | +-----------+
| | | | |
V | +------+--------+ | |
+----+ | | | | | +----+
/ | | V V V | |
|cs4215| | +----+ +----+ +----+ V |
+------+ | |5180| |5170| |5180| +-------+ |
| | +----+ +----+ +----+ |PT3877 | |
| | | | | +-------+ |
| | +-----+-----+-----+-----+ | V
| | | | | | | | +---------+
+----+ | V V V V V V | M-720 |
| | +---+ +---+ +---+ +---+ +---+ +-----+ +---------+
| | +---+ +---+ +---+ +---+ +---+ |PT3983 |
| | | | |8A270| | +-----+ |
| +--+ | +-----+--+--+-----+ | |
| | | | | |
V V V V V V
+-+-+-+-+-+ +----------+ +------+ +-----------------+ +-----------+ +---------------------+
|Audio port | Parallel | | K/B | |Serial port(A/B) | | TP port | | SCSI Port |
+-+-+-+-+-+ +----------+ +------+ +-----------------+ +-----------+ +---------------------+