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- struct flag_t {
- bool n, v, m, x, d, i, z, c;
- inline operator unsigned() const {
- return (n << 7) + (v << 6) + (m << 5) + (x << 4)
- + (d << 3) + (i << 2) + (z << 1) + (c << 0);
- }
- inline unsigned operator=(uint8_t data) {
- n = data & 0x80; v = data & 0x40; m = data & 0x20; x = data & 0x10;
- d = data & 0x08; i = data & 0x04; z = data & 0x02; c = data & 0x01;
- return data;
- }
- inline unsigned operator|=(unsigned data) { return operator=(operator unsigned() | data); }
- inline unsigned operator^=(unsigned data) { return operator=(operator unsigned() ^ data); }
- inline unsigned operator&=(unsigned data) { return operator=(operator unsigned() & data); }
- flag_t() : n(0), v(0), m(0), x(0), d(0), i(0), z(0), c(0) {}
- };
- struct reg16_t {
- union {
- uint16 w;
- struct { uint8 order_lsb2(l, h); };
- };
- inline operator unsigned() const { return w; }
- inline unsigned operator = (unsigned i) { return w = i; }
- inline unsigned operator |= (unsigned i) { return w |= i; }
- inline unsigned operator ^= (unsigned i) { return w ^= i; }
- inline unsigned operator &= (unsigned i) { return w &= i; }
- inline unsigned operator <<= (unsigned i) { return w <<= i; }
- inline unsigned operator >>= (unsigned i) { return w >>= i; }
- inline unsigned operator += (unsigned i) { return w += i; }
- inline unsigned operator -= (unsigned i) { return w -= i; }
- inline unsigned operator *= (unsigned i) { return w *= i; }
- inline unsigned operator /= (unsigned i) { return w /= i; }
- inline unsigned operator %= (unsigned i) { return w %= i; }
- reg16_t() : w(0) {}
- };
- struct reg24_t {
- union {
- uint32 d;
- struct { uint16 order_lsb2(w, wh); };
- struct { uint8 order_lsb4(l, h, b, bh); };
- };
- inline operator unsigned() const { return d; }
- inline unsigned operator = (unsigned i) { return d = uclip<24>(i); }
- inline unsigned operator |= (unsigned i) { return d = uclip<24>(d | i); }
- inline unsigned operator ^= (unsigned i) { return d = uclip<24>(d ^ i); }
- inline unsigned operator &= (unsigned i) { return d = uclip<24>(d & i); }
- inline unsigned operator <<= (unsigned i) { return d = uclip<24>(d << i); }
- inline unsigned operator >>= (unsigned i) { return d = uclip<24>(d >> i); }
- inline unsigned operator += (unsigned i) { return d = uclip<24>(d + i); }
- inline unsigned operator -= (unsigned i) { return d = uclip<24>(d - i); }
- inline unsigned operator *= (unsigned i) { return d = uclip<24>(d * i); }
- inline unsigned operator /= (unsigned i) { return d = uclip<24>(d / i); }
- inline unsigned operator %= (unsigned i) { return d = uclip<24>(d % i); }
- reg24_t() : d(0) {}
- };
- struct regs_t {
- reg24_t pc;
- reg16_t a, x, y, s, d;
- flag_t p;
- uint8_t db, mdr;
- bool e;
- regs_t() : db(0), mdr(0), e(false) {}
- };
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