Memory Bank Control - Sharp mz-800 Technical Reference And User's Manual

~t
rt
$EO
MODE
-
Function
o
$0000 -
$7FFF
to DRAM.
0000
T
1000
2000
3000
4000
DRAM
5000
6000
7000
8000
9000
AOOO
8000
cooo
DODO
I
EOOO
I
E070
I
FOOO
I
I
FFFF
L __
_j
Memory Bank Control
$E1 $E2 $E3 $E4
MZ-700 mode MZ-800 mode
-
MZ-700 mode MZ-800 mode MZ-700 mode
MZ-800 mode
o $0000 - $FFFF o $EOOO - $FFFF o $0000 - $0FFF o $0000 - $FFFF o $EOOO - $FFFF o $0000- $0FFF o
$0000 -
$0FFF
to DRAM. to DRAM. to monitor to VRAM, key to monitor to monitor to monitor
ROM. timer, and ROM.
ROM.
ROM.
monitor ROM.
o $1000- $CFFF o $1000- $1FFF
to DRAM
to CG ROM.
o $0000 - $FFFF o $2000 - $7FFF
to VRAM, key and
timer, and $COOO - $DFFF
monitor ROM. to DRAM.
o $8000 - $BFFF
to
VRAM
(NOTE).
o $EOOO - $FFFF
to monitor
ROM.
~--l
,---,
,--,
~--,
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MONITOR
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ROM
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MONITOR
ROM
DRAM
MONITOR
ROM
CG
ROM
DRAM
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VRAM
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----
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r
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VRAM
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VRAM
(NOTE)
DRAM
B
KEY, TIMER
DRAM
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MONITOR
MONITOR
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ROM
ROM
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KEY, TIMER
MONITOR
ROM
MONITOR
ROM
Area within dotted line does not involve change.
____1
(NOTE): In the case of 320 x 200 mode, contents of $8000- $9FFF are transferred, instead,
and those after $AOOO are transferred to DRAM.
Power on or RESET input
4