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Difference between revisions of "AGI/Specifications/Other/AGI256/Implementation Details"
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AGI/Specifications/Other/AGI256/Implementation Details (view source)
Revision as of 23:17, 16 July 2007
, 23:17, 16 July 2007Added info about differences in AGIDATA.OVL.
(Added disassembly of AGIGRAF.OVL.) |
(Added info about differences in AGIDATA.OVL.) |
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| Line 24: | Line 24: | ||
* AGI.EXE | * AGI.EXE | ||
* AGIDATA.OVL | * AGIDATA.OVL | ||
===Differences between AGI v2.936's AGIDATA.OVL and AGI256's AGIDATA.OVL=== | |||
<pre> | |||
dseg:0x08C5: dw offset CmdUnknown170 | |||
</pre> | |||
Unknown170 command's subroutine's location has been | |||
changed from the original 0x2726 to hacked 0x9975. | |||
0x9975 goes beyond what is in AGI.EXE so | |||
it goes to point to the AGIGRAF.OVL's functions. | |||
AGIGRAF.OVL is loaded into cseg:0x9800 so taking | |||
away the displacement we get 0x9975-0x9800 = 0x175. | |||
See the AGIGRAF.OVL disassembly for more details | |||
about the function that this points to. | |||
===Disassembly of AGIGRAF.OVL=== | ===Disassembly of AGIGRAF.OVL=== | ||