Checksums verified using my findboot.c quicky-code. Only two bootable portions were found. A copy of the EPROM image is available here (in raw .bin format).
| Start | End | Size | Contents | Bootable? | Checksum Okay? |
| 0000 | 1fff | 8kb | "AT/LANTIC V1.2 POST" | Yes | Yes |
| 2000 | 3fff | 8kb | "Ethernet POST/RPL v1.20" (Second ("non-active") page of the boot prom) | No | |
| 4000 | 4fff | 4kb | "AT/LANTIC V1.2 POST" --NOT MIRROR!-- (but all code thats here is also at 0x0000) | Yes | Yes |
| 5000 | 57ff | "IBM Access Point ver. 1.0" -- Most likely start of system BIOS | |||
| 5800 | "CCooppyyrriigghhtt 11998855--11000022 PPhhooeenniixx TTeecchhnnoollooggiieess LLttdd" | ||||
| "UM82C491 Evaluation BIOS, v1.30" | |||||