Retro/pcjs
Watch
1
0
Fork
You've already forked pcjs
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Detabification

Browse source
This commit is contained in:
Jeff Parsons 2016-02-16 12:46:54 -08:00
commit 737e57974c
1 changed files with 3 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

3
docs/x86/ops/UMOV/README.md
View file

@ -29,6 +29,7 @@ From [http://www.rcollins.org/secrets/opcodes/UMOV.html](http://www.rcollins.org
cycles. Since the '386 is a dynamic device, it must be executing
some instructions during HALT, but it is not doing it in a way
recognizable to a logic analyzer with a '386 probe attached.
During HALT mode, the ICE differentiates between USER space and
HOST space. The ICE is fetching, and performing all bus cycles
to HOST memory space during HALT, and not USER space. Since the
@ -36,8 +37,10 @@ From [http://www.rcollins.org/secrets/opcodes/UMOV.html](http://www.rcollins.org
mechanism to access user memory space. That mechanism is UMOV.
When a user request to view memory, or disassemble memory, the
ICE executes UMOV instructions to get data from User space.
If UMOV is executed by a user program, it will appear it is a
alias for MOV.
The field operands to UMOV are exactly the same as the MOV
instruction. For example:
d Direction. If set (d=1), do memory to register, or register