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Add more comments about INTC8ROM

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tomcw 2017-09-23 19:29:59 +01:00
parent 3a5bf012f1
commit 6fd125de31
1 changed files with 6 additions and 2 deletions
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8
source/Memory.cpp
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@ -534,12 +534,16 @@ static bool IsCardInSlot(const UINT uSlot);
// 1 0 internal internal
// 1 1 internal internal
//
// NB. if (INTCXROM || INTC8ROM) == true then internal ROM
//
// (*) SLOTCXROM'
// -----------
//
// INTC8ROM: Unreadable soft switch (UTAIIe:5-28)
// . Set: Access to $C3XX with SLOTC3ROM reset
// . Reset: Access to $CFFF or an MMU reset
// . Set: On access to $C3XX with SLOTC3ROM reset
// - "From this point, $C800-$CFFF will stay assigned to motherboard ROM until
// an access is made to $CFFF or until the MMU detects a system reset."
// . Reset: On access to $CFFF or an MMU reset
//
static BYTE __stdcall IO_Cxxx(WORD programcounter, WORD address, BYTE write, BYTE value, ULONG nCyclesLeft)