Editing Sad Mac Error Codes (section)

=== Critical tests (will halt boot) ===

{| class="wikitable"
|+ ''Portable critical tests''
! Test (TT) !! Name !! Minor code
|-
| 01 || ROM checksum || {{code|0000FFFF}} if mismatched
|-
| 03 || RAM modulo-3 test || Bitmask of failing data lines (16-bit bus on the Portable)
|-
| 05 || Address line test || XOR of expected vs. actual at the failing boundary
|-
| 06 || VIA init || (no test — only appears if an exception fires during init)
|-
| 08 || Data bus test at end of RAM || Bitmask of failed bits
|-
| 0B || SCSI init || (exception only)
|-
| 0C || SWIM init || (exception only)
|-
| 0E || Data bus test at start of RAM || Bitmask of failed bits
|-
| 0F || System error before error table loaded || Minor = exception number
|-
| 10 || Power Manager self-test || Minor is the PM communication code (see below)
|-
| 11 || Memory sizing || Often pairs with a PM communication error
|-
| 14 || Power Manager communication || Minor = PM handshake state (see below)
|-
| 82 || VRAM data test ||
|-
| 83 || VRAM address test ||
|}