15 January 2018, 11:44
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#2
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Registered User
Join Date: Dec 2014
Location: germany
Posts: 439
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In the commented exec 1.2 disassembly there is some explanation (Ctrl-F "HELP"):
Quote:
; See if the system wants a guru put up after reboot.
; This works as follows: If for some reason, a guru can't be put
; up in the normal fashion, the system writes "HELP" at location
; zero, writes the alert data (number and 32-bit parameter) at
; location $000100, and resets.
; Early in the startup code (right here), this "HELP" is checked
; for. If it is present, it is removed, and the data at location
; $000100 is loaded into registers D6 and D7. If no "HELP" is
; found, register D6 is loaded with -1. This data will later be
; put at ExecBase->LastAlert, once the ExecBase structure has been
; built. The following subroutine call does all this.
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