snes9x/apu/bapu/smp/iplrom.cpp

45 lines
1.7 KiB
C++

#ifdef SMP_CPP
//this is the IPLROM for the S-SMP coprocessor.
//the S-SMP does not allow writing to the IPLROM.
//all writes are instead mapped to the extended
//RAM region, accessible when $f1.d7 is clear.
const uint8 SMP::iplrom[64] = {
/*ffc0*/ 0xcd, 0xef, //mov x,#$ef
/*ffc2*/ 0xbd, //mov sp,x
/*ffc3*/ 0xe8, 0x00, //mov a,#$00
/*ffc5*/ 0xc6, //mov (x),a
/*ffc6*/ 0x1d, //dec x
/*ffc7*/ 0xd0, 0xfc, //bne $ffc5
/*ffc9*/ 0x8f, 0xaa, 0xf4, //mov $f4,#$aa
/*ffcc*/ 0x8f, 0xbb, 0xf5, //mov $f5,#$bb
/*ffcf*/ 0x78, 0xcc, 0xf4, //cmp $f4,#$cc
/*ffd2*/ 0xd0, 0xfb, //bne $ffcf
/*ffd4*/ 0x2f, 0x19, //bra $ffef
/*ffd6*/ 0xeb, 0xf4, //mov y,$f4
/*ffd8*/ 0xd0, 0xfc, //bne $ffd6
/*ffda*/ 0x7e, 0xf4, //cmp y,$f4
/*ffdc*/ 0xd0, 0x0b, //bne $ffe9
/*ffde*/ 0xe4, 0xf5, //mov a,$f5
/*ffe0*/ 0xcb, 0xf4, //mov $f4,y
/*ffe2*/ 0xd7, 0x00, //mov ($00)+y,a
/*ffe4*/ 0xfc, //inc y
/*ffe5*/ 0xd0, 0xf3, //bne $ffda
/*ffe7*/ 0xab, 0x01, //inc $01
/*ffe9*/ 0x10, 0xef, //bpl $ffda
/*ffeb*/ 0x7e, 0xf4, //cmp y,$f4
/*ffed*/ 0x10, 0xeb, //bpl $ffda
/*ffef*/ 0xba, 0xf6, //movw ya,$f6
/*fff1*/ 0xda, 0x00, //movw $00,ya
/*fff3*/ 0xba, 0xf4, //movw ya,$f4
/*fff5*/ 0xc4, 0xf4, //mov $f4,a
/*fff7*/ 0xdd, //mov a,y
/*fff8*/ 0x5d, //mov x,a
/*fff9*/ 0xd0, 0xdb, //bne $ffd6
/*fffb*/ 0x1f, 0x00, 0x00, //jmp ($0000+x)
/*fffe*/ 0xc0, 0xff //reset vector location ($ffc0)
};
#endif