Game.com
Tiger's Game.com is a touchscreen handheld on a Sharp SM8521. No Ghidra module exists for the SM8521. Unicorn has no backend for it either.
The devices
| Device | Years | CPU and clock | Media and format | Ghidra support | Emulator with a debugger |
|---|---|---|---|---|---|
| Game.com | 12 September 1997 (US) | Sharp SM8521 at 10 MHz | Two cartridge slots | None | MAME driver commonly cited (not confirmed) |
| Game.com Pocket Pro | Mid-1999 | Sharp SM8521 at 10 MHz | One cartridge slot | None | As above |
Game.com and Pocket Pro
Hardware
Tiger's Game.com came out in the US on 12 September 1997. The Pocket Pro followed in mid-1999. It uses a Sharp SM8521 8-bit CPU at 10 MHz. The 200 by 160 screen has 4 grey levels and a 12 by 10 grid touchscreen. The original had no backlight. One Pocket Pro model has one. The original has two cartridge slots. The Pocket Pro has one.
Internet use needed a separate cartridge and a 14.4 kbit/s modem for email and text web. The Pocket Pro dropped internet use except for high-score submission (Wikipedia: Game.com). The RAM size is not confirmed.
Tools
No Ghidra module exists for the SM8521. A MAME Game.com driver is commonly cited but not confirmed.
Projects to learn from
A prototype of an unreleased Game.com port of Castlevania: Symphony of the Night was found and released in 2022 (Wikipedia: Game.com).
For an exact reimplementation
The touchscreen and the modem cartridge are outside inputs that a test records (Handheld practices). The SM8521 programs are small, so writing a SLEIGH module or a purpose-built core would take modest effort.