contains Sad Mac error icon code
E739796
The Sad Mac error icon code is the built-in Macintosh ROM routine that displays the iconic frowning computer graphic when a hardware or system failure is detected at startup.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Sad Mac error icon code | 0 |
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
Macintosh firmware component
ⓘ
ROM routine ⓘ error display routine ⓘ |
| associatedWith |
Macintosh startup chime and error tones
NERFINISHED
ⓘ
Sad Mac icon NERFINISHED ⓘ |
| cannotRunIf | critical ROM or CPU failure occurs ⓘ |
| designedFor | compact Macintosh computers ⓘ |
| era | classic Mac OS era ⓘ |
| errorIndicationMethod | icon plus hexadecimal error codes ⓘ |
| executedBy | Macintosh 68k CPU during boot ⓘ |
| hasCulturalImpact | iconic symbol of classic Macintosh hardware failure ⓘ |
| hasFunction | display Sad Mac icon on hardware or system failure ⓘ |
| hasRole |
assist in hardware diagnostics
ⓘ
indicate non-recoverable startup errors ⓘ |
| implementedAs | low-level assembly code in ROM ⓘ |
| introducedFor | early Macintosh models ⓘ |
| locatedIn | Macintosh ROM NERFINISHED ⓘ |
| nonVolatileStorage | read-only memory ⓘ |
| outputs |
error code pattern
ⓘ
frowning Macintosh computer graphic ⓘ |
| partOf |
Macintosh boot ROM
NERFINISHED
ⓘ
Macintosh power-on self-test ⓘ |
| platform | Apple Macintosh NERFINISHED ⓘ |
| requires | functional minimal video hardware to display icon ⓘ |
| runsDuring | Macintosh startup sequence ⓘ |
| successorTo | later gray screen and kernel panic indicators ⓘ |
| triggersWhen |
hardware failure detected at startup
ⓘ
system failure detected at startup ⓘ |
| usedBy | Macintosh boot firmware ⓘ |
| visualStyle | black-and-white bitmap graphic ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.