| Address | Len | Name | Description | Default |
|---|---|---|---|---|
| 0300 | 12 | BASIC Indirect vector table | ||
| 030C | 4 | Storage for registers with BASIC SYS call 1 byte each for A, X, Y & Status in that order | ||
| 0310 | 3 | USRPOK | Jump instruction for BASIC USR() function Actual JMP instruction so first byte MUST be 0x4C | 0x4c |
| 0311 | 2 | USRADD | Address of USR() function This is the address used by USR() when it calls USRPOK | |
| 0313 | 1 | Unused | ||
| 0314 | 2 | CINV | IRQ Interrupt Routine Vector | 0xEA31 |
| 0316 | 2 | CBNV | BRK Interrupt Routine Vector | 0xFE66 |
| 0318 | 2 | NMINV | NMI Interrupt Routine Vector | 0xFE47 |
| 031A | Kernal Indirect Vectors | |||
| 031A | 2 | IOPEN | Kernal OPEN Vector | 0xFE4A |
| 031C | 2 | ICLOSE | Kernal close Vector | 0xF291 |
| 031e | 2 | ICHKIN | Kernal CHKIN Vector | 0xF20E |
| 0320 | 2 | ICKOUT | Kernal CKOUT Vector | 0xF250 |
| 0322 | 2 | ICLRCH | Kernal CLRCHN Vector | 0xF333 |
| 0324 | 2 | IBASIN | Kernal CHRIN Vector | 0xF157 |
| 0326 | 2 | IBSOUT | Kernal CHROUT Vector | 0xF1CA |
| 0328 | 2 | ISTOP | Kernal STOP Vector | 0xF6ED |
| 032A | 2 | IGETIN | Kernal GETIN Vector | 0xF13E |
| 032C | 2 | ICLALL | Kernal CLALL Vector | 0xF32F |
| 032E | 2 | USRCMD | User-Defined Command Vector Unused on C64, holdover from the PET. | 0xFE66 |
| 0330 | 2 | ILOAD | Kernal LOAD Vector | 0xF49E |
| 0332 | 2 | ISAVE | Kernal SAVE Vector | 0xF5DD |
| 0334 | 8 | Unused, space for 4 user vectors | ||
| 033C | 192 | TBUFFR | Cassette I/O Buffer | |
| 03FC | 4 | Unused |