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MSM38256RS (OKI)
N-MOS MASK PROGRAMMABLE ROM 256K-BIT (32768x8)
— TOP VIEW —
DO D1 D2 03 D4 D5 06 07
AO ~ A14 ; ADDRESS INPUT
CE
( CHIP
ENABLE
CS
! CHIP SELECT
DO - D7
; DATA
OE
J OUTPUT ENABLE
S-3527 (YAMAHA)
C MOS MSX PORT CONTROLLER AND SOFTWARE CONTROLLED SOUND GENERATOR
— TOP VIEW —
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AB6 Q3
AB5 Q4
AB4 Q1
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AB 1 Q7
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DBO
DB 1
DB2
D83
DB4
065
DB6
DB7
ABO
AB 1
A83
AB4
AB5
AB6
AB7
AB14
AB15
M 1
RFSH
MREQ
10R0
RD
WR
JIS/50
BUSY
FWD 1
BACK 1
LEFT 1
R1GHT1
TRG A1
TRG B1
OUT A
FWD 2
BACK 2
LEFT 2
RIGHT2
TRG A2
TRG B2
OUT B
CM I
CMO
REM
PPISND
SSGSNO
GNDISSGJ
RSEL
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Y2
Y3
Y4
Y5
Y6
Y7
Y8
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X3
X4
X5
X6
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CAP
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P ST 8
PD BO
PDB1
PDB2
PDB3
PDB4
PDB5
PDB6
PDB7
WAIT
MPX
RAS
CAS 2/E
CAS3
WE
ROMCS
CS1
CS2
CS12
SLT 1
SLT2
SLT3/30
SLT 01/31
SLT 03/33
VDPCSR
VDPCSW
70
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RST I RSTO
CLK1
CLK0
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130
129
ABO, 1,3^7,14,15
BACK 1 ,2
BUSY
CAP
CAS2/E
CAS 3
CLK 1,0
CM I ,0
CS 1,2,12
DB0~D87
FWD 1,2
I0R0
JIS/50
KANA
LEFT 1,2
Ml
MPX
MREQ
OUT A , B
PDB0~7
PPISND
PSTB
RAS
RD
REM
RFSH
RIGHT 1,2
RSEL
RST 1,0
SLT 1
SLT 2
SLT3/30
SSG SND
GND(SSG)
TRG A 1, 2
TRG B 1,2
VDP CSR
VDP CSW
WAIT
WE
WR
XO^XT
Y0~ Y9
Y10/SK
ADDRESS BUS
BACK SIGNAL 1,2
PRINTER BUSY SIGNAL
CAP LED SIGNAL
RAM COLUMN ADDRESS STROBE
RAM COLUMN ADDRESS STROBE
CLOCK INPUT, OUTPUT
CASSETTE SIGNAL IN,OUT
ROM CHIP SELECT 1,2,12
DATA BUS
FWD SIGNAL 1,2
I/O REQUEST
KEYBOARD ASSIGNMENT
CONTROL JIS/50
KANA LED SIGNAL
LEFT SIGNAL 1,2
MACHINE CYCLE 1
D-RAM MULTIPLEX SIGNAL
MEMORY REQUEST
OUT SIGNAL A, B
PRINTER DATA BUS
PPI SOUND
PRINTER STROBE SIGNAL
DRAM ROW ADDRESS STROBE
READ SIGNAL
CASSETTE REMOTE SIGNAL
REFRESH
RIGHT SIGNAL 1,2
EXPANSION SELECT REGISTOR
CONTROL SIGNAL
RESET
IN,OUT
SLOT SELECT 1
SLOT SELECT 2
SLOT SELECT 3/30
ANALOG SOUND
GROUND(SSG)
TRIGGER A1,2
TRIGGER B1,2
VDP READ STROBE
VDP WRITE STROBE
WAIT REQUEST SIGNAL
DRAM
WRITE SIGNAL
WR SIGNAL
KEYBOARD RETURN SIGNAL
KEYBOARD SCAN SIGNAL
KEYBOARD SCAN SIGNAL/SERIAL KEY IN
4-4
HB-501 P/501 F
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