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MemGetAuxPtr(): Refactor & added comment about video scanner fetching aux from the 1st 64K aux bank (#520)

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This commit is contained in:
tomcw 2018-09-10 21:28:08 +01:00
parent 18622cb113
commit a15e5a47f6
1 changed files with 8 additions and 5 deletions
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13
source/Memory.cpp
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@ -1095,11 +1095,14 @@ LPBYTE MemGetAuxPtr(const WORD offset)
: memaux+offset;
#ifdef RAMWORKS
if ( ((SW_PAGE2 && SW_80STORE) || VideoGetSW80COL()) &&
( ( ((offset & 0xFF00)>=0x0400) &&
((offset & 0xFF00)<=0x0700) ) ||
( SW_HIRES && ((offset & 0xFF00)>=0x2000) &&
((offset & 0xFF00)<=0x3F00) ) ) ) {
// Video scanner (for 14M video modes) always fetches from 1st 64K aux bank (UTAIIe ref?)
if (((SW_PAGE2 && SW_80STORE) || VideoGetSW80COL()) &&
(
( ((offset & 0xFF00)>=0x0400) && ((offset & 0xFF00)<=0x0700) ) ||
( SW_HIRES && ((offset & 0xFF00)>=0x2000) && ((offset & 0xFF00)<=0x3F00) )
)
)
{
lpMem = (memshadow[(offset >> 8)] == (RWpages[0]+(offset & 0xFF00)))
? mem+offset
: RWpages[0]+offset;