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Benchmarks 71B versus 48GX
06-20-2020, 07:51 AM
Post: #34
RE: Benchmarks 71B versus 48GX
Thanks Dave for the hex dump.

Now, one question remains : what does the 1LF2 do when it executes the 808C PC=(A) opcode?
Is it a nop or something else?

The 808C opcode is part of the 808x group, in the 1LF2 only the 8080 INTON and 808F INTOFF are defined.
So it depends on how the opcode decoding is done in the 1LF2, but I would expect the 808C opcode to be executed as INTOFF.
It may be possible to prove it, but probably not worth the effort.

J-F
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Messages In This Thread
RE: Benchmarks 71B versus 48GX - RMollov - 06-22-2020, 04:48 AM
RE: Benchmarks 71B versus 48GX - KimH - 06-17-2020, 11:43 AM
RE: Benchmarks 71B versus 48GX - KimH - 06-17-2020, 12:25 PM
RE: Benchmarks 71B versus 48GX - KimH - 06-17-2020, 02:12 PM
RE: Benchmarks 71B versus 48GX - KimH - 06-18-2020, 06:09 AM
RE: Benchmarks 71B versus 48GX - KimH - 06-18-2020, 07:08 AM
RE: Benchmarks 71B versus 48GX - HP67 - 05-05-2014, 01:42 PM
RE: Benchmarks 71B versus 48GX - rprosperi - 06-17-2020, 10:23 PM
RE: Benchmarks 71B versus 48GX - KimH - 06-19-2020, 04:40 PM
RE: Benchmarks 71B versus 48GX - J-F Garnier - 06-20-2020 07:51 AM



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