About This Video
Let's take a look at my retro Apple IIc (1984), originally purchased brand new by my grandparents, and how I came to own it years later, plus a modern HDMI and VGA video upgrade using the A2C TangyPack FPGA by Rob Kim.
The A2C TangyPack is an FPGA-based video upgrade for the Apple IIc, Apple IIc+, and Laser 128 that adds HDMI (DVI compatible) and VGA output through the video expansion port. It is powered directly from the port and requires no external power.
This device performs scan doubling, converting the Apple IIc's original 560x192 video signal into a modern display-friendly resolution of approximately 640x480 (720x480 @ 28.63 MHz pixel rate), making it compatible with most modern monitors.
The TangyPack includes three onboard buttons with the following features:
- Scanline effect: On or Off
- Color modes: Color, Mono Green, Mono Amber, Mono White
- Border colors: Off, White, Blue, Green
In this video, I demonstrate installation, features, and a side-by-side comparison between the original Apple IIc CRT display and modern HDMI output.
Rob Kim's Github for A2C TangyPack:
https://github.com/rowokii/A2C_TangyPack
CT6502 Assembly Lines Apple IIc Tangy Pack HDMI VGA Adapter (NTSC):
https://ct6502.org/product/tangypack/
Build Of Materials (BOM):
A2C TangyPack 3D Print Case STL files:
https://github.com/rowokii/A2C_TangyPack/blob/main/Case%20STL/Case_STL_readme.md
DigiKey Parts BOM (tactile switches, VGA D-Sub and 15 pin D-Sub connector, screw terminals):
https://www.digikey.com/en/mylists/list/BZYKVBNS0P
Tang Nano 9K:
Purchase on Amazon or another online source
Quantity 5 - M3 x 5 x 4 heat inserts:
https://www.amazon.com/Verkelly-Threaded-Inserts-M3x5x4-knurled/dp/B0DQ7SG68T/
Quantity 5 - M3 x 8mm flat head screws for the case:
https://www.amazon.com/Uxcell-a15101300ux0191-Phillips-Countersunk-Machine/dp/B018RSV2AI/
You can find more Apple IIc information and projects in my Apple IIc System Guide.