0380-038F ---- 2nd Binary Synchronous Data Link Control adapter (see 03A0)


0380   r/w  on board 8255 port A, internal/external sense
0381   r/w  on board 8255 port B, external modem interface
0382   r/w  on board 8255 port C, internal control and gating
0383   r/w  on board 8255 mode register
0384   r/w  on board 8253 channel square wave generator
0385   r/w  on board 8253 channel 1 inactivity time-out
0386   r/w  on board 8253 channel 2 inactivity time-out
0387   r/w  on board 8253 mode register
0388   r/w  on board 8273 read: status  write: command
0389   r/w  on board 8273 read: response  write: parameter
038A   r/w  on board 8273 transmit interrupt status
038B   r/w  on board 8273 receiver interrupt status
038C   r/w  on board 8273 data