TimmyHQ

Timmy a'ka Harlequin 48K by Superfo

© 2021 KWF

Date: 10/04/2022 Revision: 0.13 (WiP)

TimmyHQ clone features:

• Z80A (3.5MHz) CPU,
• logic with discrete CMOS chips,
• 16KB lower RAM,
• 32KB upper RAM,
• 4 x 16KB ROM (selectable),
• AY-3-8913 sound chip controlled with ZX128K ports,
• all Timex ports (0xF4, 0xF5, 0xF6 & 0xFF) decoder included,
• 0xFF port write/read implemented,
• Kempston joystick interface,
• RGB and composite video outputs,
• compatible with TC2048 keyboard,
• RESET button,
• connector for MH-M18 Bluetooth (BT) audio module,
• PCB fits within the Timex Computer 2048 case.

Schematic digaram modifications and checks completed:

PCB autorouting:

PCB v0.12 corrected and sent for manufacturing:

Building prototype with PCB v0.12:

Warranty

No Warranty of the Project. The Issuer makes no express or implied warranty of any kind whatsoever with respect to the Project.

License

GNU General Public License v3.0 T&C applies to this repository content.