Rom Control Register - Motorola MVME162FX Programmer's Reference Manual

I2SU
I2WP
I2EN

ROM Control Register

ADR/SIZ
BIT 7
NAME
OPER
RESET
This function is not used on the MVME162FX.
When this bit is high, the VMEchip2 drives a
supervisor address modifier code when the F page is
accessed. When this bit is low, the VMEchip2 drives
a user address modifier code when the F page is
accessed.
When this bit is high, write posting is enabled to the
local bus F page. When this bit is low, write posting
is disabled to the local bus F page.
When this bit is high, the F page ($F0000000 through
$FF7FFFFF) map decoder is enabled. The F0 page is
defined as A24/D16 on the VMEbus while the F1-FE
pages are defined as A32/D16. When this bit is low,
the F page is disabled.
6 5
SIZE
R/W
0 PS
LCSR Programming Model
$FFF4002C
4 3 2
BSSPD
R/W
0 PS
1 0
ASPD
R/W
0 PS
2-51
2