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ZT counter: wrap around on 16-bit overflow

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This behavior matches System 3.9.
This commit is contained in:
kichikuou
2021-11-16 21:37:14 +09:00
parent c31da0fe10
commit 45b50fe78a
1 changed files with 5 additions and 9 deletions
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src/cmdz.c
+5 -9
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@@ -248,8 +248,7 @@ void commandZT2() {
int *var = getCaliVariable();
int val = get_counter(0) / 100;
if (val > 65535) val = 65535;
*var = val;
*var = val & 0xffff;
DEBUG_COMMAND("ZT2 %p:\n", var);
}
@@ -259,8 +258,7 @@ void commandZT3() {
int *var = getCaliVariable();
int val = get_counter(0) * 3 / 100;
if (val > 65535) val = 65535;
*var = val;
*var = val & 0xffff;
DEBUG_COMMAND("ZT3 %p:\n", var);
}
@@ -270,8 +268,7 @@ void commandZT4() {
int *var = getCaliVariable();
int val = get_counter(0) * 3 / 50;
if (val > 65535) val = 65535;
*var = val;
*var = val & 0xffff;
DEBUG_COMMAND("ZT4 %p:\n", var);
}
@@ -281,8 +278,7 @@ void commandZT5() {
int *var = getCaliVariable();
int val = get_counter(0) / 10;
if (val > 65535) val = 65535;
*var = val;
*var = val & 0xffff;
DEBUG_COMMAND("ZT5 %d:\n", val);
}
@@ -314,7 +310,7 @@ void commandZT11() {
if (num > 256)
WARNING("invalid timer id %d\n", num);
else
*var = get_counter(num) / divisor;
*var = (get_counter(num) / divisor) & 0xffff;
DEBUG_COMMAND("ZT11 %d,%d:\n", num, *var);
}