lan91c100 Standard Microsystems Corp., lan91c100 Datasheet - Page 28

• Manufacturer Part Number: lan91c100
• Description: Feast ? Ast Ethernet Controller
• Manufacturer: Standard Microsystems Corp.

I/O SPACE - BANK 0
FREE MEMORY AVAILABLE This register can
be read at any time to determine the amount of
free memory.
MEMORY SIZE upon reset or upon the RESET
MMU command.
MEMORY SIZE - This register can be read to
determine the total memory size.
BYTE
BYTE
HIGH
LOW
OFFSET
8
1
1
The register defaults to the
MEMORY INFORMATION REGISTER
1
1
FREE MEMORY AVAILABLE (IN BYTES * 256 * M)
NAME
1
1
MEMORY SIZE (IN BYTES * 256 * M)
28
1
1
All memory-related information is represented in
256 * M byte units, where the multiplier M is
determined by the MCR upper byte.
These registers default to FFh, which should be
interpreted as 256.
1
1
READ ONLY
TYPE
1
1
1
1
SYMBOL
MIR
1
1