Casio PV-1000/ASIC pinout
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/^\
/ \
/ \
VCC -- / 1 64 \ ?? ??
?? ?? / 2 63 \ <- GPI63
Red <- / 3 62 \ <- GPI62
Green <- / 4 61 \ <- GPI61
Blue <- / 5 60 \ <- GPI60
/CSync <- / 6 59 \ -- Gnd
/Colorburst <- / 7 58 \ -- VCC
square$FA <- / 8 57 \ ?? Gnd
square$F9 <- / 9 56 \ ?? Gnd
square$F8 <- / 10 55 \ -> GPO55
Gnd ?? / 11 ( ) 54 \ -> GPO54
9MHz -> / 12 53 \ -> GPO53
/BUSRQ <- / 13 52 \ -> GPO52
/BUSACK -> / 14 51 / ?? ??
/WR -> / 15 50 / ?? ??
/RD <> / 16 49 / ?? ?? Orientation:
/IORQ -> / 17 48 / -> /RAMCE | |
/MREQ <> / 18 47 / ?? ?? .------------.
/INT <- / 19 46 / <? /RESET 52-| NEC JAPAN |-32
D7 <> \ 20 45 / <> A0 | D65010G031 |
D6 <> \ 21 ( ) 44 / <> A1 |O O|
D5 <> \ 22 43 / <> A2 | |
D4 <> \ 23 42 / <> A3 64-| 8337P5 |-20
D3 <> \ 24 41 / <> A4 '------------'
D2 <> \ 25 40 / <> A5 | |
VCC -- \ 26 39 / <> A6 1 19
Gnd -- \ 27 38 / <> A7
D1 <> \ 28 37 / <> A8 Legend:
D0 <> \ 29 36 / <> A9 ------------------------------
A15 <> \ 30 35 / <> A10 --[chip]-- Power
A14 <> \ 31 34 / <> A11 ->[chip]<- Input
A13 <> \ 32 33 / <> A12 <-[chip]-> Output
\ / <>[chip]<> Bidirectional
\ / ??[chip]?? Unknown
\ /
V
By context on the PCB, it is implied that pins 51 and 50 are additional GPOs, but they were cut during rework.
Similarly, it is implied that some of pins 59, 57, 56 could be additional GPIs.
