$ ./diff.sh 0xBACDC 0x80
2c2
< baserom.gba:     file format binary
---
> pokeruby.gba:     file format binary
13c13
<    bace6:     491a            ldr     r1, [pc, #104]  ; (0xbad50)
---
>    bace6:     4918            ldr     r1, [pc, #96]   ; (0xbad48)
16,18c16,18
<    bacec:     f127 fd06       bl      0x1e26fc
<    bacf0:     4e18            ldr     r6, [pc, #96]   ; (0xbad54)
<    bacf2:     4d19            ldr     r5, [pc, #100]  ; (0xbad58)
---
>    bacec:     f127 fd02       bl      0x1e26f4
>    bacf0:     4e16            ldr     r6, [pc, #88]   ; (0xbad4c)
>    bacf2:     4d17            ldr     r5, [pc, #92]   ; (0xbad50)
28,30c28,30
<    bad06:     2200            movs    r2, #0
<    bad08:     56aa            ldrsb   r2, [r5, r2]
<    bad0a:     0090            lsls    r0, r2, #2
---
>    bad06:     2100            movs    r1, #0
>    bad08:     5669            ldrsb   r1, [r5, r1]
>    bad0a:     0088            lsls    r0, r1, #2
32,49c32,49
<    bad0e:     0050            lsls    r0, r2, #1
<    bad10:     3001            adds    r0, #1
<    bad12:     0080            lsls    r0, r0, #2
<    bad14:     4468            add     r0, sp
<    bad16:     6819            ldr     r1, [r3, #0]
<    bad18:     6800            ldr     r0, [r0, #0]
<    bad1a:     4281            cmp     r1, r0
<    bad1c:     dd03            ble.n   0xbad26
<    bad1e:     00d0            lsls    r0, r2, #3
<    bad20:     4468            add     r0, sp
<    bad22:     6800            ldr     r0, [r0, #0]
<    bad24:     6018            str     r0, [r3, #0]
<    bad26:     2200            movs    r2, #0
<    bad28:     56aa            ldrsb   r2, [r5, r2]
<    bad2a:     0090            lsls    r0, r2, #2
<    bad2c:     1983            adds    r3, r0, r6
<    bad2e:     00d0            lsls    r0, r2, #3
<    bad30:     4468            add     r0, sp
---
>    bad0e:     00ca            lsls    r2, r1, #3
>    bad10:     ac01            add     r4, sp, #4
>    bad12:     18a0            adds    r0, r4, r2
>    bad14:     6819            ldr     r1, [r3, #0]
>    bad16:     6800            ldr     r0, [r0, #0]
>    bad18:     4281            cmp     r1, r0
>    bad1a:     dd03            ble.n   0xbad24
>    bad1c:     4669            mov     r1, sp
>    bad1e:     1888            adds    r0, r1, r2
>    bad20:     6800            ldr     r0, [r0, #0]
>    bad22:     6018            str     r0, [r3, #0]
>    bad24:     2100            movs    r1, #0
>    bad26:     5669            ldrsb   r1, [r5, r1]
>    bad28:     0088            lsls    r0, r1, #2
>    bad2a:     1983            adds    r3, r0, r6
>    bad2c:     00ca            lsls    r2, r1, #3
>    bad2e:     4669            mov     r1, sp
>    bad30:     1888            adds    r0, r1, r2
53,70c53,70
<    bad38:     da05            bge.n   0xbad46
<    bad3a:     0050            lsls    r0, r2, #1
<    bad3c:     3001            adds    r0, #1
<    bad3e:     0080            lsls    r0, r0, #2
<    bad40:     4468            add     r0, sp
<    bad42:     6800            ldr     r0, [r0, #0]
<    bad44:     6018            str     r0, [r3, #0]
<    bad46:     b010            add     sp, #64 ; 0x40
<    bad48:     bc70            pop     {r4, r5, r6}
<    bad4a:     bc01            pop     {r0}
<    bad4c:     4700            bx      r0
<    bad4e:     0000            movs    r0, r0
<    bad50:     039c            lsls    r4, r3, #14
<    bad52:     083d            lsrs    r5, r7, #32
<    bad54:     87b4            strh    r4, [r6, #60]   ; 0x3c
<    bad56:     0203            lsls    r3, r0, #8
<    bad58:     87b3            strh    r3, [r6, #60]   ; 0x3c
<    bad5a:     0203            lsls    r3, r0, #8
---
>    bad38:     da02            bge.n   0xbad40
>    bad3a:     18a0            adds    r0, r4, r2
>    bad3c:     6800            ldr     r0, [r0, #0]
>    bad3e:     6018            str     r0, [r3, #0]
>    bad40:     b010            add     sp, #64 ; 0x40
>    bad42:     bc70            pop     {r4, r5, r6}
>    bad44:     bc01            pop     {r0}
>    bad46:     4700            bx      r0
>    bad48:     0394            lsls    r4, r2, #14
>    bad4a:     083d            lsrs    r5, r7, #32
>    bad4c:     87b4            strh    r4, [r6, #60]   ; 0x3c
>    bad4e:     0203            lsls    r3, r0, #8
>    bad50:     87b3            strh    r3, [r6, #60]   ; 0x3c
>    bad52:     0203            lsls    r3, r0, #8
>    bad54:     b510            push    {r4, lr}
>    bad56:     4c28            ldr     r4, [pc, #160]  ; (0xbadf8)
>    bad58:     6820            ldr     r0, [r4, #0]
>    bad5a:     3001            adds    r0, #1