Table A-2.
PPD781
O Mode Setting
<,”>
*
-:;
‘
Mode 1
Mode O
Externa! Memory
o
0
4K,
addresses O to
OFFF
o
1 (Note)
16K, addresses O to 3FFF
1 (Note)
1 (Note)
64K, addresses O to
OFFF
Table A-3.
vPD781
1 PF Operation
PF7
Port
Port
Port
AB 15
PF6
I
PF5
I
PF4
I
PF3
/
PF2
I
PF1
I
PFO
I
External Memory
Port
Port Port
Port Port Port
Port 256 bytes (max.)
Port
Port Port
AB 11
AB 10 AB9 AB8
4K (max.)
Port
AB13
AB12 AB1 1 AB1O AB9
I
AB8
I
16K
(max.)
AB14
I
AB13
I
AB12
I
AB1 1
I
AB1O
I
AB9 AB8
I
60K (max.)
Table A-4.
pPD781
O PF Operation
Mode 1 Mode O
PF7 PF6
PF5
PF4 PF3 PF2
PFI
PFO
External Memory
o
0
Port
Port Port
Port
AB 11
AB 10 AB9
AB8 4K bytes (max.)
o
1
Port
Port AB 13
AB 12
AB 11
AB 10 AB9
AB8
16K bytes (max.)
1
1
AB 15 AB 14 AB 13
AB 12 AB
11
AB 10
AB9
AB8
64K bytes (max.)
.
.,
{,;’
A-4
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