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Index > DOS > [found] Good 8086 instruction reference?

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Rahsennor



Joined: 07 Jul 2007
Posts: 61
Rahsennor
Huzzah, bitsavers.computerhistory.org and www.os2museum.com work! Looks like I've got some reading to do.
Ali.Z wrote:
Rahsennor wrote:
TEST mem, imm as performing zero memory transfers


i did not understand what you meant by this, would you explain? also specify the size of the operation.

Both errors I mentioned are in table 2-21. On page 2-51 the "Bytes" column for AAM is 1, not 2. On page 2-67 the last addressing mode for TEST has "-" in the "Transfers" column, despite it addressing memory. That affects the timing for the 8088 as explained in the footnote: "For the 8088, add four clocks for each 16-bit word transfer."
Post 13 May 2020, 08:22
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Ali.Z



Joined: 08 Jan 2018
Posts: 371
Ali.Z
oh yes TEST mem,imm "-" transfers.

page 65 (2-50) also talk about transfers and reference page 36 (2-21) as well.

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Asm For Wise Humans
Post 13 May 2020, 20:35
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