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Fix for https://github.com/tomcw/mb-audit

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Update MB (and disk and speaker) in smaller batches.
1 ms like AppleWin.

Signed-off-by: Andrea Odetti <mariofutire@gmail.com>
This commit is contained in:
Andrea Odetti 2021-06-03 11:51:12 +01:00
parent dcae60dede
commit 8d07bb1506
1 changed files with 15 additions and 5 deletions
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20
source/frontends/sdl/sdlframe.cpp
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@ -502,12 +502,22 @@ namespace sa2
const bool bVideoUpdate = !g_bFullSpeed;
const UINT dwClksPerFrame = NTSC_GetCyclesPerFrame();
const DWORD executedCycles = CpuExecute(cyclesToExecute, bVideoUpdate);
// do it in the same batches as AppleWin (1 ms)
const DWORD fExecutionPeriodClks = g_fCurrentCLK6502 * (1.0 / 1000.0); // 1 ms
g_dwCyclesThisFrame = (g_dwCyclesThisFrame + executedCycles) % dwClksPerFrame;
GetCardMgr().GetDisk2CardMgr().UpdateDriveState(executedCycles);
MB_PeriodicUpdate(executedCycles);
SpkrUpdate(executedCycles);
DWORD totalCyclesExecuted = 0;
// check at the end because we want to always execute at least 1 cycle even for "0"
do
{
const DWORD thisCyclesToExecute = std::min(fExecutionPeriodClks, cyclesToExecute - totalCyclesExecuted);
const DWORD executedCycles = CpuExecute(thisCyclesToExecute, bVideoUpdate);
totalCyclesExecuted += executedCycles;
g_dwCyclesThisFrame = (g_dwCyclesThisFrame + executedCycles) % dwClksPerFrame;
GetCardMgr().GetDisk2CardMgr().UpdateDriveState(executedCycles);
MB_PeriodicUpdate(executedCycles);
SpkrUpdate(executedCycles);
} while (totalCyclesExecuted < cyclesToExecute);
}
void SDLFrame::ExecuteInRunningMode(const size_t msNextFrame)