A Microprocessor-based portable computer: The IBM 5100, Proceedings of the IEEE ( Volume: 64, Issue: 6, June 1976)
salvaging a huge IBM 1130 APL program "What is a Personal Computer?". PC Magazine. November 1983. not a chip but a single board .. an IBM 1130 emulator in PALM microcode https://books.google.com/books?id=q8fwTt09_MEC&pg=RA5-PA9-IA1
"John Titor was right? IBM 5100". an emulator, used only for APL, not for BASIC https://alt.folklore.computers.narkive.com/b3MlCvVT/john-titor-was-right-ibm-5100
TOSEC: IBM PC Compatibles (2012-04-23) Internet Archive https://archive.org/details/IBM_PC_Compatibles_TOSEC_2012_04_23