# Generic fuzzer for INT PIPs¶

Run this fuzzer a few times until it stops adding new PIPs to the database.

Sample runs:

- 78fa4bd5
- jenkins 3, success
- intpips: 1 iter, N=200, -m 5 -M 15
- intpips todo final: N/A
- intpips segbits_int_l.db lines: 3374
- rempips todo initial: 279
- rempips todo final (32): 9

- 20e09ca7
- jenkins 21, rempips failure
- intpips: 6 iters, N=48, -m 15 -M 45
- intpips segbits_int_l.db lines: 3364
- rempips todo initial: 294
- rempips todo final (51): 294

- 1182359f
- jenkins 23, intpips failure
- inpips: 12 iters, N=48, -m 15 -M 45
- intpips todo final: 495
- inpips segbits_int_l.db lines: 5167
- rempips todo: N/A

## const0¶

These show up in large numbers after a full solve. This means that it either has trouble solving these or simply cannot. Counts from sample run

Includes:

- INT.BYP_ALT*.LOGIC_OUTS* (24)
- Ex: INT.BYP_ALT2.LOGIC_OUTS14

- INT.[NESW]*.LOGIC_OUTS* (576)
- Ex: INT.EE4BEG2.LOGIC_OUTS2
- Ex: INT.EL1BEG_N3.LOGIC_OUTS0
- Ex: INT.WR1BEG3.LOGIC_OUTS2

- INT.IMUX*.* (1151)
- Ex: INT.IMUX0.NL1END0
- Ex: INT.IMUX0.FAN_BOUNCE7
- Ex: INT.IMUX14.LOGIC_OUTS7

## GFAN¶

Includes:

- Easily solves: INT.IMUX_L*.GFAN*
- Can solve: INT.BYP_ALT*.GFAN*
- Cannot solve: INT.IMUX*.GFAN* (solves as “<m1 0>
”)

## IMUX¶

- Okay: BYP_ALT*.VCC_WIRE
- Cannot solve: INT.IMUX[0-9]+.VCC_WIRE
- Cannot solve: INT.IMUX_L[0-9]+.VCC_WIRE

See https://github.com/SymbiFlow/prjxray/issues/383