Toshiba T3200 User Manual page 177

Pin
I/O Signal Name Description
50 I FDCWE
Data write enable signal to the FDD.
This signal is active high.
Printer interrupt enable signal.
51
0
IRQEN This signal is active low. This signal is issued by
the command to 372H.
RS232C (Primary) select signal.
52
0 CCMICS This signal is active (low) when the I/O port
address is 3F8H-3FFH.
53
Vcc
+5V
FDD motor on signal to the 1st FDD.
54
0 SWMONA This signal is active high. ON/OFF is controlled by
the command to 3F2H.
FDD motor on signal to the 2nd FDD.
55
0
SWMONB
This signal is active high. ON/OFF is controlled by
the command to 3F2H.
56
0 INDRVB
Internal FDD (2nd FD) select signal.
This siqnal is active hiqh.
57
0 SWFDA
Internal FDD (1st FDD) select signal.
This signal is active high.
This signal defines the FDD transfer rate.
When this signal is low;
58 0
XRATEO 500 kbps-250 kbps
When this signal is high;
300 kbps
This signal is issued by the command to 3F7H.
Printer select command. This signal is active low.
59 I SELECT
It can be read from address 3F7H. This signal
becomes write gate signal when it is in the
external FFD mode.
Printer busy status. This signal is active high.
60 I BUSY
It can be read from the address 371 H.
This signal becomes motor ON/OFF signal when it
is in the external FDD mode.
Read enable signal to the I/O peripheral which is
61
0
CBDIR connected to the external bus. This type of bus
does not exist in this system.
62 I STROBE
Printer strobe signal. This signal is active high.
It can be read from address 371 H.
Printer auto-feed command. This signal becomes
63
I AUTFD low density signal when it is in the external FDD
mode.
D-6