Service manual

(1) The memory space in OOOOH"""3FFFH is the same as
the memory space in 8000H- BFFFH of the
l-80. The
method
of accessing is also the same.
(2) The memory space in BOOOH .... FFFFH is the same as
that in the PC-1500. The PV signal of the LH·5803
is used
to se l ect the bank for SOOOH .... BFFFH . (The
PV s ig nal of the lH ·5803 is directly sent by PVOUT
of the SC7852.)
5-4. 110 mapping
Th e I/ O space of the Z·80 consists of 256 bytes in OOH ....
FFH.
ooH Use prohibited.
O'H
10H
Port corre$Pondlng to LH-5810 I LH ·5811) contained
IFH in the SC7852 (not IYnchronlzed with .pas).
,O H
TC8576F UART s el8<:tlon
27 H
28 H
S2 (slot 2)
2FH
30 H
SC7852 intern .1 LSI cont rol register pon
lFH
4<l H Synem r8$lrve
4FH
50H
HD61202 (fC2 1, (lC3)
58H
HD61202 (fell
--
58H
HD61202 (lC2)
System
""rve
60H S2 blot 21
SFH
7BH CE -1 600F
7FH
SO H Ce ·1 S00P
83H
B4 H
FSH
-
,
,
,
,
,
- 9 -
z.aO I /O
.ddre ..
NOTES:
LH -6803
. ddr lU
Reed
•
PC - lGOO
Write
# (Areg): Indicates the cont en ts of the memory (M El
accessed) which are implied by the lH ·5803
CPU internal register (R reg iste r) .
~: Vacancy in the Z- BO I/ O map which is not used
at pr esent.