[cctalk] i8008 and interrupts

Can someone explain how the Intel 8008 (yes, the 8008, NOT the 8080!) handled saving and restoring the flags during an interrupt? The 8008 has four flag bits - CZS&P - but there doesn't seem to be any explicit equivalent to the PSW register nor any "PUSH PSW" or "POP PSW" type instructions. Other than testing the flag bits with the JUMP/CALL/RET instructions there doesn't seem to be any way to access them. Interrupts work pretty much like the 8080 - during the interrupt response the peripheral forces an instruction onto the bus, typically an RST opcode but in theory it could be anything. RST and CALL however only appear to save the PC on the internal stack, and RET only restores the PC. So how do you save and restore the flag bits? It seems like interrupts would be pretty much useless without this, so I must be missing something. Thanks,