转换为兼容USB的PICtail Plus和固件修改图形PICtail™Plus板2

Microchip Technology’s Graphics PICtail™ Plus Board
Version 2.0 (AC164127 – PCB 05-1999 Rev 3) is not
compatible with the USB PICtail Plus Daughter Board
(AC164131 – PCB 05-02033 Rev 1). This document
describes how to modify the PICtail Plus Board
Version 2.0 to remove the conflicts in the pin used by the
two boards.
TB3012
Conversion of Graphics PICtail Plus Board 2 for Compatibility
with USB PICtail Plus and Firmware Modification

Author: Paolo Tamayo This document also describes the firmware modifications
Microchip Technology Inc. to the drivers used to adapt to the hardware changes.

HARDWARE MODIFICATION
INTRODUCTION
Two possible connections of the three components are
Microchip Technology’s Graphics PICtail Plus Board shown in the following Figure 1. This assumes the
Version 2.0 (AC164127