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SAM card: refactor as a class, and support save/load state

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This commit is contained in:
tomcw
2021-09-18 11:55:29 +01:00
parent f85e175328
commit 10a83eed61
6 changed files with 77 additions and 8 deletions
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source/SAM.cpp
+30 -3
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@@ -35,13 +35,14 @@
#include "SAM.h"
#include "Memory.h"
#include "Speaker.h"
#include "YamlHelper.h"
//
// Write 8 bit data to speaker. Emulates a "SAM" speech card DAC
//
static BYTE __stdcall IOWrite_SAM(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nExecutedCycles)
BYTE __stdcall SAMCard::IOWrite(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG nExecutedCycles)
{
// Emulate audio from a SAM / 8 bit DAC card
// Only supportable if AppleWin is using WAVE output
@@ -86,7 +87,33 @@ static BYTE __stdcall IOWrite_SAM(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG
return res;
}
void ConfigureSAM(LPBYTE pCxRomPeripheral, UINT uSlot)
void SAMCard::InitializeIO(LPBYTE pCxRomPeripheral, UINT slot)
{
RegisterIoHandler(uSlot, IO_Null, IOWrite_SAM, IO_Null, IO_Null, NULL, NULL);
RegisterIoHandler(slot, IO_Null, IOWrite, IO_Null, IO_Null, NULL, NULL);
}
//===========================================================================
static const UINT kUNIT_VERSION = 1;
std::string SAMCard::GetSnapshotCardName(void)
{
static const std::string name("SAM");
return name;
}
void SAMCard::SaveSnapshot(YamlSaveHelper& yamlSaveHelper)
{
YamlSaveHelper::Slot slot(yamlSaveHelper, GetSnapshotCardName(), m_slot, kUNIT_VERSION);
YamlSaveHelper::Label unit(yamlSaveHelper, "%s: null\n", SS_YAML_KEY_STATE);
// NB. No state for this card
}
bool SAMCard::LoadSnapshot(YamlLoadHelper& yamlLoadHelper, UINT slot, UINT version)
{
if (version < 1 || version > kUNIT_VERSION)
throw std::string("Card: wrong version");
return true;
}