User`s manual

DIGITAL-LOGIC AG MSMP5 / P3 SEN/SEV Manual V1.6A
63
I/O Ad-
dress
Read/Write
Status
Description
037Ah R / W Control port for parallel port 1
bits 7-5 = Reserved
bit 4 = 1 Enable IRQ
bit 3 = 1 Select printer
bit 2 = 0 Initialize printer
bit 1 = 1 Automatic line feed
bit 0 = 1 Strobe
03B0h -
03B8h
R / W Various video registers
I/O addresses 03BCh - 03BEh are reserved for use with parallel port 3. See the bit defi-
nitions for addresses 0378h - 037Ah.
03BCh R / W Data port - parallel port 3
03BDh R / W Status port - parallel port 3
03BEh R / W Control port - parallel port 3
03C0h -
03CFh
R / W Video subsystem (EGA/VGA)
03C2h -
03D9h
R / W Various CGA and CRTC registers
03E0h R / W PCCARD Address select
03E1h R / W PCCARD Data transfer with 365SL controller
I/O addresses 03E8h - 03EFh are reserved for use with serial port 3. See the bit defini-
tions for I/O addresses 03F8h - 03FFh.
03E8h W Transmitter holding register for serial port 3
03E8h R Receive buffer register for serial port 3
03E8h R / W Baud rate divisor (low byte) when DLAB = 1
03E9h R / W Baud rate divisor ( high byte) when DLAB = 1
03E9h R / W Interrupt enable register when DLAB = 0
03EAh R Interrupt identification register for serial port 3
03EBh R / W Line control register for serial port 3
03ECh R / W Modem control register for serial port 3
03EDh R Line status register for serial port 3
03EEh R Modem status register for serial port 3
03EFh R / W Scratch register for serial port 3 (used for diagnostics)
03F2h W Digital output register for primary diskette drive controller
bits 7-6 = 0 Reserved
bit 5 = 1 Enable drive 1 motor
bit 4 = 1 Enable drive 0 motor
bit 3 = 1 Enable diskette DMA
bit 2 = 0 Reset controller
bit 1 = 0 Reserved
bit 0 = 0 Select drive 0
1 Select drive 1
Continued...