IBM 560 - Manual (Page 77)

Get CPU Information
Input Field
Major Function Number - h
Minor Function Number - 1h
Parameter 1
- Reserved
Parameter 2 - Reserved
Parameter 3 - Reserved
Parameter 4 - Reserved
Parameter 5 - Reserved
Output Field
Return Code - Error Status
Auxiliary Return Code - Reserved
Parameter 1
- Reserved
Parameter 2 - CPU ID
(Bit 15- 8) Microprocessor Type
(Bit
7- ) Microprocessor Stepping Level
= FFFFh : Unknown
Parameter 3 - Clock Information
(Bit 15- 8) CPU clock (units: MHz)
= FFh : Unknown
(Bit
7- ) Internal clock (units: MHz)
= FFh : Unknown
Parameter 4 - Reserved
Parameter 5 - Reserved
ThinkPad 560/560E SMAPI BIOS A-13