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-N64 CART Info-
Bus timing:
| ALE_L | ALE_H | AD |
| 1 | 1 | Cart address (upper 16 bits 0x10xx) |
| 1 | 0 | Cart address (lower 16 bits) |
Typical in game bus activity:
At most 256 words are transmitted between ALE_L
First boot:
The first word read is in the cart header address 0 [0x80371240]
which sets the bus speed for subsequent cart access.
If you set it to 0x8037FF40 then the access timings for loading
the boot code at 0x40 in the header would look like the first
access at 0, where the read low signal was 4.0us. Can be useful
for debugging since all bus activity is slowed down but still
functional.
Cart Pinout:
| GND | 1 | 26 | GND |
| GND | 2 | 27 | GND |
| AD15 | 3 | 28 | AD0 |
| AD14 | 4 | 29 | AD1 |
| AD13 | 5 | 30 | AD2 |
| GND | 6 | 31 | GND |
| AD12 | 7 | 32 | AD3 |
| /write | 8 | 33 | ALE_L |
| VCC | 9 | 34 | VCC |
| /read | 10 | 35 | ALEL_H |
| AD11 | 11 | 36 | AD4 |
| AD10 | 12 | 37 | AD5 |
| 12V | 13 | 38 | 12V |
| 14 | 39 | ||
| AD9 | 15 | 40 | AD6 |
| AD8 | 16 | 41 | AD7 |
| VCC | 17 | 42 | VCC |
| CIC_DATA1 | 18 | 43 | CIC_DATA2 |
| 1.6MHZ | 19 | 44 | |
| /COLD_RESET | 20 | 45 | /OS EVENT |
| S_DAT | 21 | 46 | |
| GND | 22 | 47 | GND |
| GND | 23 | 48 | GND |
| LAUDIO | 24 | 49 | RAUDIO |
| GND | 25 | 50 | GND |
VCC=3.3V
looking from the top of the console: pin 1 is left front, pin 26
is left rear
Backup unit:
Project files
Schematic (PDF)