Nintendo 3DS ARM Documentation

Tightly-coupled Memory Size Register

  • Read only
  • Contains information regarding the data and instruction tightly-coupled memory (TCM)
  • Accessible only in privileged modes
  • Raw value: 0x00140180
Register Bits Meaning Value
31:22 Reserved b0000000000
21:18 Data TCM Size 5 (16KB)
17:15 Reserved b000
14 Data TCM Absent 0
13:10 Reserved b0000
9:6 Instruction TCM Size 6 (32KB)
5:3 Reserved b000
2 Instruction TCM Absent 0
1:0 Reserved b00

This register can be accessed via MRC p15, 0, Rd, c0, c0, 2.