The following table lists the correspondences between the designs' old codes and the ECMA Group C codes.
| OLD CODE | ECMA CODE |
| C1010 | C10.10.10.10 |
| C1011 | C10.10.11.11 |
| C1012 | C10.10.10.15 |
| C1020 | C10.10.20.20 |
| C1020a | C10.10.20.20.a |
| C1021 | C10.10.20.21 |
| C1055 | C10.10.90.20 |
| C1110 | C20.10.10.10 |
| C1111 | C20.10.11.11 |
| C1120 | C20.10.20.20 |
| C1155 | C20.10.90.20 |
| C1210 | C30.10.01.10 |
| C1211 | C30.10.01.11 |
| C1220 | C30.10.01.20 |
| C1255 | C30.10.01.10 |
| C2110 | C20.20.10.10 |
| C2111 | C20.20.11.11 |
| C2120 | C20.20.20.20 |
| C2155 | C20.20.55.20 |
| C2160 | C20.20.60.20 |
| C2160a | C20.20.60.20a |
| C2210 | C30.20.10.01 |
| C2211 | C30.20.11.01 |
| C2220 | C30.20.20.01 |
| C2255 | C30.20.55.01 |
| C3010 | C10.30.11.10 |
| C3011 | C10.30.11.11 |
| C3020 | C10.30.20.20 |
| C3021 | C10.30.20.21 |
| C3080 | C10.30.90.90 |
| C3110 | C20.30.10.10 |
| C3111 | C20.30.11.11 |
| C3120 | C20.30.20.20 |
| C3180 | C20.30.11.90 |
| C3210 | C30.30.01.10 |
| C3211 | C30.30.00.11 |
| C3220 | C30.30.01.20 |
| C3280 | C30.30.01.90 |
| C4010 | C10.40.10.10 |
| C4011 | C10.40.11.11 |
| C4020 | C10.40.20.20 |
| C4020a | C10.40.20.20.b |
| C4021 | C10.40.60.21 |
| C4060 | C10.40.60.20 |
| C4080 | C10.40.90.90 |
| C4110 | C20.40.10.10 |
| C4111 | C20.40.11.11 |
| C4120 | C20.40.20.20 |
| C4180 | C20.40.11.90 |
| C4210 | C30.40.01.10 |
| C4211 | C30.40.01.11 |
| C4220 | C30.40.01.20 |
| C4280 | C30.30.01.90 |
| C5010 | C10.50.10.10 |
| C5011 | C10.50.11.11 |
| C5080 | C10.50.90.90 |
| C5110 | C20.50.10.10 |
| C5111 | C20.50.11.11 |
| C5210 | C30.50.01.10 |
| C5211 | C30.50.00.11 |
| C5280 | C30.50.01.90 |