xx = hbd1ps1d.w72 (target file name)
xx = hbd1ps1d.w71 (current file name - loaded from hbd1ps1d itself)

800788bc : 3C028002  LUI     00000001 (v0), 8002 (32770),
800788c0 : 24446C14  ADDIU   800f7ef0 (a0), 80020000 (v0), 6c14 (27668),
800788c4 : 3C03800D  LUI     00000007 (v1), 800d (32781),
800788c8 : 90426C14  LBU     80020000 (v0), 6c14 (80020000 (v0)) [80026c14]
800788cc : 00000000  NOP    
800788d0 : 10400043  BEQ     00000068 (v0), 00000000 (r0), 800789e0,
800788d4 : 2467ECB0  ADDIU   00000000 (a3), 800d0000 (v1), ecb0 (60592),
800788d8 : 3C06800F  LUI     00000002 (a2), 800f (32783),

; =============================
; =============================
; =============================

800788dc : 00E51021  ADDU    00000068 (v0), 800cecb0 (a3), 00000000 (a1),

; check if filenames match (w71 / w72)

800788e0 : 90830000  LBU     800d0000 (v1), 0000 (80026c14 (a0)) [80026c14]
800788e4 : 90420000  LBU     800cecb0 (v0), 0000 (800cecb0 (v0)) [800cecb0]
800788e8 : 00000000  NOP    
800788ec : 10620007  BEQ     00000068 (v1), 00000068 (v0), 8007890c,
800788f0 : 00000000  NOP    

; mismatch
(..)

; bump ptr, check for EOS

8007890c : 24840001  ADDIU   80026c14 (a0), 80026c14 (a0), 0001 (1),
80078910 : 90820000  LBU     00000068 (v0), 0000 (80026c15 (a0)) [80026c15]
80078914 : 00000000  NOP    
80078918 : 1440FFF0  BNE     00000062 (v0), 00000000 (r0), 800788dc,
8007891c : 24A50001  ADDIU   00000000 (a1), 00000000 (a1), 0001 (1),

; pass = good file
(..)

800788f4 : 90820001  LBU     00000032 (v0), 0001 (80026c1f (a0)) [80026c20]
800788f8 : 00000000  NOP    
800788fc : 10400013  BEQ     00000000 (v0), 00000000 (r0), 8007894c,
80078900 : 24050003  ADDIU   0000000b (a1), 00000000 (r0), 0003 (3),
8007894c : 3C02800F  LUI     00000000 (v0), 800f (32783),
80078950 : 8C4343D0  LW      00000031 (v1), 43d0 (800f0000 (v0)) [800f43d0]
80078954 : 0801E27B  J       800789ec,
80078958 : 3C040004  LUI     80026c1f (a0), 0004 (4),

; =============================
; =============================
; =============================

; EXIT

800789ec : 00641825  OR      08400000 (v1), 08400000 (v1), 00040000 (a0),
800789f0 : AC4343D0  SW      08440000 (v1), 43d0 (800f0000 (v0)) [800f43d0]
800789f4 : 00A01021  ADDU    800f0000 (v0), 00000003 (a1), 00000000 (r0),
800789f8 : 8FBF0040  LW      800788b0 (ra), 0040 (800ddf98 (sp)) [800ddfd8]
800789fc : 8FB7003C  LW      00000001 (s7), 003c (800ddf98 (sp)) [800ddfd4]
80078a00 : 8FB60038  LW      00000000 (s6), 0038 (800ddf98 (sp)) [800ddfd0]
80078a04 : 8FB50034  LW      04000000 (s5), 0034 (800ddf98 (sp)) [800ddfcc]
80078a08 : 8FB40030  LW      00000001 (s4), 0030 (800ddf98 (sp)) [800ddfc8]
80078a0c : 8FB3002C  LW      800d0000 (s3), 002c (800ddf98 (sp)) [800ddfc4]
80078a10 : 8FB20028  LW      800f0000 (s2), 0028 (800ddf98 (sp)) [800ddfc0]
80078a14 : 8FB10024  LW      00000002 (s1), 0024 (800ddf98 (sp)) [800ddfbc]
80078a18 : 8FB00020  LW      00400000 (s0), 0020 (800ddf98 (sp)) [800ddfb8]
80078a1c : 03E00008  JR      80078d50 (ra),
80078a20 : 27BD0048  ADDIU   800ddf98 (sp), 800ddf98 (sp), 0048 (72),
