Antic

## Description

ANTIC ("Alpha-Numeric Television Interface Circuit") is a microprocessor dedicated to the television display. It is a true microprocessor; it has an instruction set, a program (called the display list), and data. The display list and the display data are written into RAM by the 6502. ANTIC retrieves this information from RAM using direct memory access (DMA). It processes the higher level instructions in the display list and translates these instructions into a real-time stream of simple instructions to GTIA.

## Catalogue numbers

    CO12296 NTSC 400/800  (7bit/shorter ref?)
    CO14887
    CO21698 PAL XL/XE (8bit/longer)
    CO21697 NTSC XL/XE (8bit/longer)

## Pinout

A0-A15 | memory address bus
D0-D7 | memory data bus
AN0-AN2 | GTIA data output
Vss | ground
/LP | light pen input
/RNMI | NMI input
/NMI | NMI output
/REF | refresh output
/HALT | halt cpu output
R/W | read/write (HI-read, LO-write)
RDY | memory ready output
Vcc | +5V power
Ø2 | phase 2 clock input (also marked as PHI2)
Ø0 | phase 0 clock output
F0O | fast phase 0 input
/RST | reset input

Back (c) 1998-2004 Jindroush Last modified: Fri Mar 22 09:57:10 2002