Talk:LOADALL
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The article does not shed light on the reasons for the presence and "undocumented" status of the LOADAL in the first place. I believe it along with (still undocumented AFAIK)pins on the 80286 has to do with supporting Intel's "in circuit emulator". In the same vein is the "undcumented undocumented" instruction code 0F 04 (on 286) which in my wildest guess is some kind of RESTORALL... or return from in circuit debugging instruction; but when executed on a normal 80286, this blocks (not even an NMI gets out, only a processor RESET does) because, in my guess again, it must be waiting for a transaction on an alternate BUS (alternate pins) which of course is unimplemented on the platform and possibly also on the CPU if it is a regular 286.
Could someone who had access to in circuit emulators provide information ?
Ninho
