VT02 / VT03 pinout
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/ 91 \ -- GND
/CS0 <- / 1 90 \ -> CPU A5
/CS1 <- / 2 89 \ <> CPU D6
CPU D5 <> / 3 88 \ -> CPU A6
CPU A14 <- / 4 87 \ <> CPU D7
CPU D3 <> / 7 86 \ -> CPU A7
CPU A2 <- / 8 85 \ -> CPU A14
CPU D2 <> / 9 84 \ -> CPU A8
CPU A1 <- / 10 83 \ -> CPU A13
GND -- / 11 82 \ -> CPU A9
CPU D1 <> / 12 81 \ -> CPU A12
CPU A0 <- / 13 80 \ -> CPU A10
CPU D0 <> / 14 79 \ <- CPU CLK (1.8MHz)
R/W <- / 15 78 \ -- VCC
/ROMSEL <- / 16 77 \ -> CPU A11
/IRQ -> / 17 76 \ <- $4016.0
PPU R/W <- / 18 75 \ <> IOCLK1
VDE <- / 19 74 \ <> IO2
VCC -- \ 20 73 \ -> IO1
ERS <- \ 21 72 \ <- $4017.4
CIRAM A10 -> \ 22 71 \ -> IO0
PPU A6 <- \ 23 70 \ <- $4017.3
PPU A7 <- \ 24 69 \ <- $4016.1
PPU A5 <- \ 25 68 \ <- $4017.2
PPU A8 <- \ 26 67 \ <> IOCLK0
PPU A4 <- \ 27 66 \ <- $4017.1
PPU A9 <- \ 28 65 \ <- /FH
PPU A3 <- \ 29 64 / -- VCC
PPU A10 <- \ 30 63 / <- /BTS
PPU A2 <- \ 31 62 / <- $4017.0
PPU A11 <- \ 32 61 / -> Crystal Out
VCC -- \ 33 60 / <- Crystal In
PPU A1 <- \ 34 59 / <- /IJSE
PPU A12 <- \ 35 58 / <- /16B
PPU A0 <- \ 36 57 / <- OBS
/ERS -- \ 37 56 / -- GND
/SFCCS -- \ 38 55 / -> Audio Out 1
PPU D0 <> \ 39 54 / -> Audio Out 0
PPU D7 <> \ 40 53 / <- /RST
PPU D1 <> \ 41 52 / <- Test Pin
PPU D6 <> \ 42 51 / -> VOUT
PPU D2 <> \ 43 50 / <- REG0
PPU D5 <> \ 44 49 / <- REG1
PPU D3 <> \ 45 48 / <- /LCDEN
PPU D4 <> \ 46 47 / -- GND
\_____/
- /CS0: /CS for $6000 - $7FFF
- /CS1: /CS for $8000 - $FFFF
- VDE: Video Data Output Enable; I/O in OneBus Mode
- ERS: External ROM chip selector / Power on Indicator / I/O in OneBus Mode
- /SFCCS: Swap the function of /CS0 and /CS1 when low
- /LCDEN: Enable LCD Output for Testing
- REGx: Region Selector. All 0 = NTSC, All 1 = PAL
- OBS: OneBus Mode Enable
- /16B: 16 bits data bus selector in OneBus Mode. A0 will decide the low byte or high byte of data on CPU D0-7
- /IJSE: Internal Joystick Enable when XJOYSEL = 0
- /BTS: Bus tristate enable
- /FH: Force /CS0 and /CS1 High
- IOCLKx: Clock of I/O or XCUP47, can be video extention address
- IOx: I/O interface Output pins or Video extention address
