User`s guide

Table 4
MC68306 Symbols
Label Symbol Pattern (binary) Description
CS cs0 xxxx xxx0 x signals ~CS3 to ~CS0 are always
available
cs1 xxxx xx0x x
cs2 xxxx x0xx x
cs3 xxxx 0xxx x
cs4 xxx0 xxxx 1 signals ~CS7 to ~CS4 are only
available in chip select mode
(AMODE=1)
cs5 xx0x xxxx 1
cs6 x0xx xxxx 1
cs7 0xxx xxxx 1
--- xxxx xxxx x
BUS br_bg_ack 000
br_bg 001
br_ack 010
br 011 bus request
bg_ack 100
bg 101 bus grant
ack 110 bus grant acknowledge
local 111 MC68306 is bus master
Do not modify the bits in the STAT or DATA labels, or the lower bits in the ADDR
label in the format specification if you want inverse assembly. Changes may
cause incorrect results. Also note that if the trigger specification is modified to
store only selected bus cycles, incorrect or incomplete inverse assembly may
result.
The lower ADDR bits are bits 0 to 15. You can modify ADDR bits 16 to 23 with no
side effects.
Analyzing the Motorola MC68306
To display the configuration labels and symbols
MC68306 Preprocessor 2–7