Tag: dip switches
2 matching upgrades
Showing 2 products.
| Status | Product | What it does | Compatibility | Links |
|---|---|---|---|---|
| AvailableChecked Jul 29, 2026 | Tynemouth PET ROM/RAM Boardby Tynemouth Software | Replaces or diagnoses PET system ROM and RAM, expands 8 KB or 16 KB machines to 32 KB, and offers selectable BASIC and display ROM sets. The current Tindie page instructs international buyers to contact Tynemouth with their address and requested options. A separate TFW8B listing was out of stock. Confirm the five- or nine-switch version, keyboard and display ROM set, shipping, and current fulfillment before ordering. The board does not replace video RAM or character ROM. |
| PET ROM/RAM Board product pagePET ROM/RAM design and diagnostic notes |
| AvailableChecked Jul 29, 2026 | VIC-20 Configurable RAM and ROM Cartridgesby Jaystonian, Retro Lemon, and community designers | Provides switch-selectable VIC-20 memory layouts with current assembled 35 KB and 37 KB cartridges plus an open 32 KB design. Jaystonian showed eight HyperExpander SMD cartridges in stock at USD 29.99 on 2026-07-29. Retro Lemon exposed a GBP 20 product page without an out-of-stock marker. The open 32 KB project remains buildable. The guide's old fixed 24 KB eBay listing is retained only as an archive because its current order path was not verified. |
| Retro Lemon 35 KB RAM and ROM cartridgeBuy the 37 KB HyperExpander SMDOpen 32 KB RAM cartridge projectArchived fixed 24 KB cartridge entrySearch eBay for VIC-20 RAM expansion cartridges |