Sharp MZ-5500 - Page 92

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;'~IOCS :
Short words for 1/0 Contrc;>l System which indicates the software module
used to control the hardware. The user can use it I
j
when called as a
subroutine by the machine language.
*Gnc:
Short words for Graphie Display Controller vuPD7220) which is used for the
MZ-5500/5600.
*VRAM:
Video RAM.
CPU GDC
PLANE2
EXPANSION
PLANE2
PLANEl
EXPANSION
.. _-------------
PLANEl
PLANEO
EXPANSION
PLANEO '
,\
UNIT: 16 bits
Unit: 8 bits
E8000 14000
EOOOO
10000
00000
D8000
DOOOO 08000
C8000
04000 I
J
16KW
32KB
00000
COOOO
EXPANSION: Expansion VRAM
Fig.l5-1 VRAM memory map
d
$5~