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Protection against setting 0 cycles in the config file and reading out from the low case cycles property

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@375
This commit is contained in:
Sjoerd van der Berg 2002-10-19 17:46:13 +00:00
parent 6dbe7ee6d2
commit 726aabde05
1 changed files with 6 additions and 10 deletions
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16
src/cpu/cpu.cpp
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@ -29,27 +29,22 @@ Flag_Info flags;
CPU_Regs cpu_regs;
Segment Segs[6];
Bit32u cpu_cycles;
Bitu cpu_cycles;
CPU_Decoder * cpudecoder;
static void CPU_CycleIncrease(void) {
Bit32u old_cycles=cpu_cycles;
cpu_cycles=(Bit32u)(cpu_cycles*1.2);
Bitu old_cycles=cpu_cycles;
cpu_cycles=(Bitu)(cpu_cycles*1.2);
if (cpu_cycles==old_cycles) cpu_cycles++;
LOG_MSG("CPU:%d cycles",cpu_cycles);
}
static void CPU_CycleDecrease(void) {
cpu_cycles=(Bit32u)(cpu_cycles/1.2);
cpu_cycles=(Bitu)(cpu_cycles/1.2);
if (!cpu_cycles) cpu_cycles=1;
LOG_MSG("CPU:%d cycles",cpu_cycles);
}
Bit8u lastint;
@ -168,7 +163,8 @@ void CPU_Init(Section* sec) {
flags.io=0;
SetCPU16bit();
cpu_cycles=section->Get_int("CYCLES");
cpu_cycles=section->Get_int("cycles");
if (!cpu_cycles) cpu_cycles=300;
KEYBOARD_AddEvent(KBD_f11,CTRL_PRESSED,CPU_CycleDecrease);
KEYBOARD_AddEvent(KBD_f12,CTRL_PRESSED,CPU_CycleIncrease);