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make class the first thing you see

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This commit is contained in:
Brad Grantham 2018-09-08 18:19:53 -07:00
parent 40035852cd
commit af715292b2
1 changed files with 34 additions and 34 deletions
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68
cpu6502.h
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@ -1,37 +1,3 @@
static bool sbc_overflow_d(unsigned char a, unsigned char b, int borrow)
{
// ??
signed char a_ = a;
signed char b_ = b;
signed short c = a_ - (b_ + borrow);
return (c < 0) || (c > 99);
}
static bool adc_overflow_d(unsigned char a, unsigned char b, int carry)
{
// ??
signed char a_ = a;
signed char b_ = b;
signed short c = a_ + b_ + carry;
return (c < 0) || (c > 99);
}
static bool sbc_overflow(unsigned char a, unsigned char b, int borrow)
{
signed char a_ = a;
signed char b_ = b;
signed short c = a_ - (b_ + borrow);
return (c < -128) || (c > 127);
}
static bool adc_overflow(unsigned char a, unsigned char b, int carry)
{
signed char a_ = a;
signed char b_ = b;
signed short c = a_ + b_ + carry;
return (c < -128) || (c > 127);
}
/*
Public methods:
CPU6502(CLK& clk, BUS& bus); - construct using clk and bus
@ -125,6 +91,40 @@ struct CPU6502
flag_change(N, v & 0x80);
}
static bool sbc_overflow_d(unsigned char a, unsigned char b, int borrow)
{
// ??
signed char a_ = a;
signed char b_ = b;
signed short c = a_ - (b_ + borrow);
return (c < 0) || (c > 99);
}
static bool adc_overflow_d(unsigned char a, unsigned char b, int carry)
{
// ??
signed char a_ = a;
signed char b_ = b;
signed short c = a_ + b_ + carry;
return (c < 0) || (c > 99);
}
static bool sbc_overflow(unsigned char a, unsigned char b, int borrow)
{
signed char a_ = a;
signed char b_ = b;
signed short c = a_ - (b_ + borrow);
return (c < -128) || (c > 127);
}
static bool adc_overflow(unsigned char a, unsigned char b, int carry)
{
signed char a_ = a;
signed char b_ = b;
signed short c = a_ + b_ + carry;
return (c < -128) || (c > 127);
}
CPU6502(CLK& clk_, BUS& bus_) :
clk(clk_),
bus(bus_),