HX-40 (Also PX-4)
| Description | |
| Manufacturer | Epson |
| Model | HX-40 (Also PX-4) |
| Date Announced | 1985 |
| Date Canceled | Unknown |
| Number Produced | Tens of thousands |
| Country of Origin | Japan |
| Price | Unknown |
| Current Value | $25+ |
| Specifications | --- |
| Processor | Z80 compatible |
| Speed | ~4 MHz |
| RAM | 64K |
| ROM | 96K |
| Storage | |
| Expansion | Optional expansion for RAM, etc. |
| Bus | Proprietary |
| Video | |
| I/O | Cassette, optional interfaces including modems, etc. |
| OS Options | Built-in BASIC |
| Notes | The HX-40/PX-4 was the successor to the Epson HX-20. It offered more RAM, more in ROM and a tilt screen borrowed from the Epson Geneva PX-8. |
| Related Items in Collection | Epson HX-20 Portable Computer, Epson Geneva PX-8 Portable Computer. |
| Related Items Wanted | Cassette interface, additional peripherals, ROMs, manuals, software. |
The Epson HX-40 is also known as the PX-4 and was an upgrade from the wildly popular Epson HX-20 Portable Computer.
The machine in my collection works perfectly and came with several peripherals including an acoustic coupler modem and a RAM disk pack.
