[1.18.2 Forge] Timer module appears to be capable of overwriting data in ROM module

[zack-emmert]

Versions:

Minecraft 1.18.2 Forge 40.2.1 TIS-3D 1.6.8+2ac5c5f

Steps to reproduce:

1. Place a casing on top of a controller, with an execution module on the top face of the casing.
2. Load the following byte sequence into a ROM module: 0x03 0x04 0x05 0x06.
3. Place the ROM module on a side of the casing, connected to the UP port on the execution module.
4. Place a timer module on a different side of the casing, connected to the LEFT port of the execution module.
5. Load the following instruction sequence onto the execution module:

MOV 0 UP
MOV UP ACC
JRO 0

6. Run the program
7. Examine the ROM module to find the second byte replaced with 0x00. The ACC register is also 0x00.

Expected result: The data stored in the ROM should not change Actual behavior: The second byte of the ROM is overwritten.

Visual guide for module placement: