| 2001 | BSC POST failed. |
| 2010 | BSC 8255 port A failure. |
| 2011 | BSC 8255 port B failure. |
| 2012 | BSC 8255 port C failure. |
| 2013 | BSC 8253 timer 1 did not reach terminal count. |
| 2014 | BSC 8253 timer 1 stuck on. |
| 2015 | 8253 timer 2 did not reach terminal count or timer 2 stuck on |
| 2016 | BSC 8253 timer 2 did not reach terminal count or timer 2 stuck on. |
| <2017 | BSC 8251 Data set ready failed to come on. |
| 2018 | BSC 8251 Clear to send not sensed. |
| 2019 | BSC 8251 Data set ready stuck on. |
| 2020 | BSC 8251 error |
| 2021 | BSC 8251 hardware reset failed. |
| 2022 | BSC 8251 software reset failed. |
| 2023 | BSC 8251 software "error reset" failed. |
| 2024 | BSC 8251 transmit ready did not come on. |
| 2025 | BSC 8251 receive ready did not come on. |
| 2026 | BSC 8251 could not force "overrun" error status. |
| 2027 | BSC Interrupt failure - no timer interrupt. |
| 2028 | BSC Interrupt failure...transmit, replace card or planar. |
| 2029 | BSC Interrupt failure....transmit, replace card. |
| 2030 | BSC Interrupt failure....receive, replace card or planar. |
| 2031 | BSC Interrupt failure....receive, replace card. |
| 2033 | BSC Ring indicate stuck on. |
| 2034 | BSC Receive clock stuck on. |
| 2035 | BSC Transmit clock stuck on. |
| 2036 | BSC Test indicate stuck on. |
| 2037 | BSC Ring indicate stuck on. |
| 2038 | BSC Receive clock not on. |
| 2039 | BSC Transmit clock not on. |
| 2040 | BSC Test indicate not on. |
| 2041 | BSC Data set ready not on. |
| 2042 | BSC Carrier detect not on. |
| 2043 | BSC Clear to send not on. |
| 2044 | BSC Data set ready stuck on. |
| 2045 | BSC Carrier detect stuck on. |
| 2046 | BSC Clear to send stuck on. |
| 2047 | BSC Unexpected transmit interrupt. |
| 2048 | BSC Unexpected receive interrupt. |
| 2049 | BSC Transmit data did not equal receive data. |
| 2050 | BSC 8251 detected overrun error. |
| 2051 | BSC Lost data set ready during data wrap. |
| 2052 | BSC Receive timeout during data wrap. |