The TBC Plus is a full length Zorro II digital time base corrector with broadcast quality 4:2:2 CCIR-601 throughput and fully integrated procAmp. It also includes a 24bit frame grabber and buffer for use as a digital video store or signal generator. Modules included with ImageFX allow direct editing and manipulation in the frame buffer.
It has the following features:
- Full transcoding between composite and Y/C (SVHS) input and outputs
- Realtime professional special effects generator featuring solarisation, strobing and pseudo-colour
- NTSC/PAL/SECAM signal standards conversion to NTSC or PAL
- Full processing amplifier control for correcting or adjusting incoming video on the fly.
- 3 Inputs (2 x Composite, 1 x SVHS) that can be connected simultaneously and switched in software
- It can convert the 2 Composite inputs into a single SVHS input
- Optional SMPTE/EBU encoding, decoding and striping
- Optional Comb filter for clean composite video
The frame buffer memory positions are the 2x 64-pin horizontal module sockets. Populated with a 1MB module, expandable to 2MB. Each SIMM socket uses a cutom 1MB 64-pin SIMM with a 32-bit wide CMOS Field Memory / Frame Memory arrangement (RAM designed for serial/video access). They are not the same type as the GVP SIMM32 modules used on many GVP 68030/040/060 accelerator boards.
The board also supports 0/2MB/8MB of standard Amiga 16-bit (Z2) FastRAM with a pair of 30-pin SIMM sockets populated in pairs (2x 1MBx8 or 2x 4MBx8) at the front edge of the card if some applications needs it, like an A3000/A4000 that also has a Z2 DMA expansion card installed and has problems accessing ChipRAM directly.
BOM details from internal GVP documents can be found here: https://archive.org/details/gvp-tbc-bom