Configuration Index And Data; Registers; Apricot Ports; Lan Led - Mitsubishi Electric LS Pro Hardware Technical Reference

Configuration The configuration index register is used to access the SCAMP configuration
index and data registers through the configuration data port. To access a particular register write

registers

the index of the register to the configuration index register then access the register
via the configuration data port.

Apricot ports

A block of 16 ports between 0120h and 012Fh are reserved for Apricot specific
functions.
Port
120
121
122
0123, 0124
0125-0127
128
0129-012B
012C
012D-012F

LAN LED

Only bit 0 of this port is used.
When it is set low (default) the LAN LED is not lit. When it is set high the LAN LED
is lit.
Memory and I/O Usage
Index (hex) Register
0 Version
2 Slot pointer
3 DRAM map
5 DRAM control
6 Refresh control
7 Clock control
0A Reserved
0B EMS configuration 1
0C EMS configuration 2
0E A0000-BFFFFh segment access control
0F C0000-CFFFFh segment access control
10 D0000-DFFFFh segment access control
11 E0000-FFFFFh segment access control
13 Reserved
14 Miscellaneous control
15 ROM and DMA control
16 Bus control
Function
LAN LED
1.6 Mbyte floppy
reserved
Option ROM page
reserved
Token ring daughterboard
reserved
microphone level control
reserved
LS PRO HARDWARE TECHNICAL REFERENCE 5/11