Vector 4 - Page 53

EXHIBIT 1-6 Z80B ADDRESSING
Example: This diagram shows how the Z80B address F8007¢5 is decoded into the
"Global Address" 128003j5. See Exhibit 3-1 for a description of how the 1280014
address was mapped.
Al5 AQ
F800H (1{1{1]1]|1]|o]o|o]|o|olo]o|olo]olo]
{ L 1
AlS [ All
(111 {111}
AlS
Selects Al4 All
Address Mapping RAM 1111
pair U43, U44 |
|
Inout t Al4d vy All Alll]v All
Address Mapping RAM 1l 1]
o , Al4 l All AlT y Al5
odrens Maoone Ry LTOL
Al7 All
lof{1{ojo[1]0]1]
Y
128001 ¢ ioh 0[o]1]0]1 l][o (o]o[ojo]o[o[o[oTolo}
AT A
Beginning of World Block Number 257g (371¢).
2 K bloek boundaries: 1280076- 12FFF154
I1 2-10