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enhanced CartCV to support small ROMs (Part 2)

This commit is contained in:
thrust26 2023-09-11 23:41:23 +02:00
parent 811bcfdf30
commit 3043acba1e
2 changed files with 8 additions and 8 deletions
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2
src/emucore/Bankswitch.cxx
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@ -164,7 +164,7 @@ Bankswitch::Sizes = {{
{ 32_KB, 512_KB }, // _CDF
{ 16_KB, 16_KB }, // _CM
{ 32_KB, 32_KB }, // _CTY
{ 2_KB, 4_KB }, // _CV
{ 0_KB, 4_KB }, // _CV
{ 128_KB, 128_KB }, // _DF
{ 128_KB, 128_KB }, // _DFSC
{ 10_KB, 11_KB }, // _DPC

14
src/emucore/CartDetector.cxx
View File

@ -34,11 +34,11 @@ Bankswitch::Type CartDetector::autodetectType(const ByteBuffer& image, size_t si
else
type = Bankswitch::Type::_AR;
}
else if(size < 2_KB) // Sub2K images
{
type = Bankswitch::Type::_2K;
}
else if((size == 2_KB) ||
//else if(size < 2_KB) // Sub2K images
//{
// type = isProbablyCV(image, size) ? Bankswitch::Type::_CV : Bankswitch::Type::_2K;
//}
else if((size <= 2_KB) ||
(size == 4_KB && std::memcmp(image.get(), image.get() + 2_KB, 2_KB) == 0))
{
type = isProbablyCV(image, size) ? Bankswitch::Type::_CV : Bankswitch::Type::_2K;
@ -516,8 +516,8 @@ bool CartDetector::isProbablyCV(const ByteBuffer& image, size_t size)
// CV RAM access occurs at addresses $f3ff and $f400
// These signatures are attributed to the MESS project
static constexpr uInt8 signature[2][3] = {
{ 0x9D, 0xFF, 0xF3 }, // STA $F3FF,X
{ 0x99, 0x00, 0xF4 } // STA $F400,Y
{ 0x9D, 0xFF, 0xF3 }, // STA $F3FF,X MagiCard
{ 0x99, 0x00, 0xF4 } // STA $F400,Y Video Life
};
if(searchForBytes(image, size, signature[0], 3))
return true;