CPU pinout: Difference between revisions
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(Changes /PAWR and /PARD to /PWR and /PRD.) |
(Adds VPA, VDA, unknown clocks. Renames address and data pins to be more explicit.) |
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[[Category:Pinouts]] | [[Category:Pinouts]] | ||
==Pinout== | |||
^ | ^ | ||
/ \ | / \ | ||
/ \ | / \ | ||
/ \ | / \ | ||
+5V -- / 1 100 \ -> A7 | +5V -- / 1 100 \ -> CPU A7 | ||
CPU A8 <- / 2 99 \ -> CPU A6 | |||
CPU A9 <- / 3 . 98 \ -> CPU A5 | |||
CPU A10 <- / 4 97 \ -> CPU A4 | |||
CPU A11 <- / 5 96 \ -> CPU A3 | |||
CPU A12 <- / 6 95 \ -> CPU A2 | |||
CPU A13 <- / 7 94 \ -> CPU A1 | |||
CPU A14 <- / 8 93 \ -> CPU A0 | |||
CPU A15 <- / 9 92 \ -> CPU /RD | |||
CPU A16 <- / 10 91 \ -> CPU /WR | |||
CPU A17 <- / 11 90 \ -- GND | |||
CPU A18 <- / 12 89 \ -> /VECTORPULL | |||
CPU A19 <- / 13 88 \ -> UNKNOWN CLK 88 | |||
CPU A20 <- / 14 87 \ -> VDA | |||
CPU A21 <- / 15 86 \ -> VPA | |||
CPU A22 <- / 16 85 \ -- +5V | |||
A23 <- / 17 84 \ -> XFLAG | A23 <- / 17 84 \ -> XFLAG | ||
GND -- / 18 83 \ -> MFLAG | GND -- / 18 83 \ -> MFLAG | ||
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joypad 2 D3 -> / 30 73 / <- TM | joypad 2 D3 -> / 30 73 / <- TM | ||
/ O 72 / -> PHI2 | / O 72 / -> PHI2 | ||
\ 71 / -> | \ 71 / -> UNKNOWN CLK 71 | ||
joypad 2 D4 -> \ 31 70 / -> /DMA | joypad 2 D4 -> \ 31 70 / -> /DMA | ||
joypad 1 D0 -> \ 32 69 / -> /PWR | joypad 1 D0 -> \ 32 69 / -> /PWR | ||
joypad 1 D1 -> \ 33 68 / -> /PRD | joypad 1 D1 -> \ 33 68 / -> /PRD | ||
+5V -- \ 34 67 / <> D7 | +5V -- \ 34 67 / <> CPU D7 | ||
joypad 1 /OE <- \ 35 66 / <> D6 | joypad 1 /OE <- \ 35 66 / <> CPU D6 | ||
joypad 2 /OE <- \ 36 65 / <> D5 | joypad 2 /OE <- \ 36 65 / <> CPU D5 | ||
OUT0 <- \ 37 64 / <> D4 | OUT0 <- \ 37 64 / <> CPU D4 Orientation: | ||
OUT1 <- \ 38 63 / <> D3 | OUT1 <- \ 38 63 / <> CPU D3 -------------------- | ||
OUT2 <- \ 39 62 / <> D2 | OUT2 <- \ 39 62 / <> CPU D2 80 51 | ||
REFRESH <- \ 40 61 / <> D1 | REFRESH <- \ 40 61 / <> CPU D1 | | | ||
TCKSEL0 -> \ 41 60 / <> D0 | TCKSEL0 -> \ 41 60 / <> CPU D0 .-----------. | ||
TCKSEL1 -> \ 42 59 / -- +5V 81-|O Nintendo |-50 | TCKSEL1 -> \ 42 59 / -- +5V 81-|O Nintendo |-50 | ||
HBLANK -> \ 43 58 / -> PA7 | S-CPU | | HBLANK -> \ 43 58 / -> PA7 | S-CPU | | ||
Line 60: | Line 61: | ||
\ / <-[5A22]-> 5A22 output | \ / <-[5A22]-> 5A22 output | ||
V <>[5A22]<> Bidirectional | V <>[5A22]<> Bidirectional | ||
==Signal descriptions== | |||
* '''VPA, VDA''': Valid Data Address and Valid Program Address, useful for caching or single-step. | |||
** VPA = 0, VDA = 0: Address bus may be invalid. | |||
** VPA = 0, VDA = 1: Valid data address | |||
** VPA = 1, VDA = 0: Valid program address | |||
** VPA = 1, VDA = 1: Opcode fetch |
Revision as of 01:54, 25 April 2022
Pinout
^ / \ / \ / \ +5V -- / 1 100 \ -> CPU A7 CPU A8 <- / 2 99 \ -> CPU A6 CPU A9 <- / 3 . 98 \ -> CPU A5 CPU A10 <- / 4 97 \ -> CPU A4 CPU A11 <- / 5 96 \ -> CPU A3 CPU A12 <- / 6 95 \ -> CPU A2 CPU A13 <- / 7 94 \ -> CPU A1 CPU A14 <- / 8 93 \ -> CPU A0 CPU A15 <- / 9 92 \ -> CPU /RD CPU A16 <- / 10 91 \ -> CPU /WR CPU A17 <- / 11 90 \ -- GND CPU A18 <- / 12 89 \ -> /VECTORPULL CPU A19 <- / 13 88 \ -> UNKNOWN CLK 88 CPU A20 <- / 14 87 \ -> VDA CPU A21 <- / 15 86 \ -> VPA CPU A22 <- / 16 85 \ -- +5V A23 <- / 17 84 \ -> XFLAG GND -- / 18 83 \ -> MFLAG joypad IO D0 <> / 19 82 \ -> /MEMLOCK joypad IO D1 <> / 20 81 \ <- RDY joypad IO D2 <> / 21 \ joypad IO D3 <> / 22 O / joypad IO D4 <> / 23 80 / -> R/W joypad IO D5 <> / 24 79 / -- GND joypad IO D6 <> / 25 78 / -> /WRAMSEL joypad IO D7 <> / 26 Nintendo 5A22 77 / -> /ROMSEL joypad 2 D0 -> / 27 Package QFP-100, 0.65mm pitch 76 / <- /ABORT joypad 2 D1 -> / 28 75 / <- HALT joypad 2 D2 -> / 29 S-CPU 74 / <- HVCMODE joypad 2 D3 -> / 30 73 / <- TM / O 72 / -> PHI2 \ 71 / -> UNKNOWN CLK 71 joypad 2 D4 -> \ 31 70 / -> /DMA joypad 1 D0 -> \ 32 69 / -> /PWR joypad 1 D1 -> \ 33 68 / -> /PRD +5V -- \ 34 67 / <> CPU D7 joypad 1 /OE <- \ 35 66 / <> CPU D6 joypad 2 /OE <- \ 36 65 / <> CPU D5 OUT0 <- \ 37 64 / <> CPU D4 Orientation: OUT1 <- \ 38 63 / <> CPU D3 -------------------- OUT2 <- \ 39 62 / <> CPU D2 80 51 REFRESH <- \ 40 61 / <> CPU D1 | | TCKSEL0 -> \ 41 60 / <> CPU D0 .-----------. TCKSEL1 -> \ 42 59 / -- +5V 81-|O Nintendo |-50 HBLANK -> \ 43 58 / -> PA7 | S-CPU | VBLANK -> \ 44 57 / -> PA6 100-|. 5A22 O|-31 /NMI -> \ 45 56 / -> PA5 .-----------' /IRQ -> \ 46 55 / -> PA4 | | GND -- \ 47 54 / -> PA3 01 30 SYSTEM CLK -> \ 48 53 / -> PA2 REFRESH /ENABLE -> \ 49 52 / -> PA1 Legend: /RESET -> \ 50 51 / -> PA0 ---------------------------- \ / --[5A22]-- Power, n/a \ / ->[5A22]<- 5A22 input \ / <-[5A22]-> 5A22 output V <>[5A22]<> Bidirectional
Signal descriptions
- VPA, VDA: Valid Data Address and Valid Program Address, useful for caching or single-step.
- VPA = 0, VDA = 0: Address bus may be invalid.
- VPA = 0, VDA = 1: Valid data address
- VPA = 1, VDA = 0: Valid program address
- VPA = 1, VDA = 1: Opcode fetch