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Old May 22nd, 2011, 04:46 PM
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Jambo51
Glory To Arstotzka
 
Join Date: Jun 2009
Gender: Male
Nature: Quiet
For anyone who is using BPRE, these routines will use the RTC's status byte to get what time of day it is, and evolve Eevee accordingly.

For Espeon:
Code:
.text
.align 2
.thumb
.thumb_func
.global espeonevocheck
main:
 ldr r1, time
 ldrb r1, [r1, #0x0]
 cmp r1, #0x4
 bge no
 cmp r1, #0x1
 blt no
 ldr r1, happinesscheck
 bx r1
no: ldr r0, exit
 bx r0
.align
time: .word 0x0203C000
happinesscheck: .word 0x08043001
exit: .word 0x08043111
Assemble and insert that routine anywhere in the ROM, then change the pointer at 0x42FC8 to point to the new routine, NOT PLUS ONE. The game uses mov pc, r0 to jump to the routine, meaning we do NOT need to add 1 for THUMB mode.

For Umbreon:
Code:
.text
.align 2
.thumb
.thumb_func
.global umbreonevocheck
main:
 ldr r1, time
 ldrb r1, [r1, #0x0]
 cmp r1, #0x4
 bge yes
 cmp r1, #0x1
 blt yes
 ldr r0, exit
 bx r0
yes: ldr r1, happinesscheck
 bx r1
.align
time: .word 0x0203C000
happinesscheck: .word 0x08043001
exit: .word 0x08043111
Assemble and insert that routine anywhere in the ROM, then change the pointer at 0x42FCC to point to the new routine, NOT PLUS ONE.

When assembled, along side the RTC, this will allow Eevee to evolve into Espeon and Umbreon in the proper way in BPRE. Anyone who wants to convert these routines for another version, feel free to do so. Just remember to credit me for the original routines.

For people who don't know how to assemble the routines, I attached the binaries to this post, allowing you to insert them from the binary directly. I offer no help on inserting these routines. You should read HackMew's ASM tutorials for a good beginner's insight into inserting ASM.
Attached Files
File Type: rar Eevolutions.rar‎ (186 Bytes, 54 views)
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Last edited by Jambo51; May 22nd, 2011 at 04:53 PM. Reason: Attached Assembled Binaries
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