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HP-41 Byte Table
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12-27-2018, 07:54 PM
Post: #1
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HP-41 Byte Table
I'm currently re-reading the famous "Synthetic Programming on the HP-41C/CV" by W.C. Wickes. In chapter "2B. The Byte Table", p. 14, the author spots the oddities of the table starting with row B. For example as for row E he asks " Why are there 16 different XEQ prefixes". Unfortunately he does not give a satisfactory answer for those. Moreover, in chapter "2C. Register, Please", p. 17, in the routine (2C-2) the "XEQ 45" is coded starting with the Byte E0. But again, he does not give an explanation why the processor codes this "XEQ" starting with byte E0 but not with on of the bytes E1, E2, ... EF, which actually seem to me as suitable as the E0 byte. Can anyone of the Masters of the 41 (SP) explain the system behind the 16 GTOs, EXQs ... please?
Thank you and Best Wishes, Juergen |
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HP-41 Byte Table - JurgenRo - 12-27-2018 07:54 PM
RE: HP-41 Byte Table - Thomas Okken - 12-27-2018, 08:31 PM
RE: HP-41 Byte Table - JurgenRo - 12-27-2018, 09:05 PM
RE: HP-41 Byte Table - JurgenRo - 12-27-2018, 09:11 PM
RE: HP-41 Byte Table - Sylvain Cote - 12-28-2018, 04:43 PM
RE: HP-41 Byte Table - JurgenRo - 12-28-2018, 08:34 PM
RE: HP-41 Byte Table - Sylvain Cote - 12-27-2018, 09:02 PM
RE: HP-41 Byte Table - JurgenRo - 12-27-2018, 10:46 PM
RE: HP-41 Byte Table - Thomas Okken - 12-27-2018, 09:18 PM
RE: HP-41 Byte Table - JurgenRo - 12-27-2018, 09:22 PM
RE: HP-41 Byte Table - hth - 12-28-2018, 05:14 PM
RE: HP-41 Byte Table - JurgenRo - 12-28-2018, 08:44 PM
RE: HP-41 Byte Table - Sylvain Cote - 12-28-2018, 09:17 PM
RE: HP-41 Byte Table - Thomas Okken - 12-28-2018, 11:44 PM
RE: HP-41 Byte Table - JurgenRo - 12-28-2018, 11:57 PM
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