| Manufacturer | Part Number | Description |
|---|---|---|
| Hualon Microelectronics | HM6818A | Real Time Clock Plus RAM |
| Hualon Microelectronics | HM23C256A | 32K x 8 Mask ROM |
| Hualon Microelectronics | HM9187 | Tone Dialer |
| Hualon Microelectronics | HM23C256 | 32K x 8 Mask ROM |
| Hualon Microelectronics | HM9114C | Tone / Pulse Switchable and 15 Memory Dialer |
| Hualon Microelectronics | HM9114A | Tone / Pulse Switchable and 15 Memory Dialer |
| Hualon Microelectronics | HM9114 | Tone / Pulse Switchable and 15 Memory Dialer |
