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This
interface card is used in conjunction with the TICE860000004A
The
external clock source has two modes, RC and Crystal. If a crystal
clock is to be used, positions 2 and 3 should be shorted on JP1
and a suitable crystal inserted into location Y1. Otherwise, if an
RC clock is to be used, positions 1 and 2 should be shorted and
the system frequency adjusted using VR1. Refer to the Tools/Mask
Option menu of the HT-IDE3000 User's Guide for the clock source
and system frequency selection.
A
speaker can be attached to LS1 or LS2 to obtain an audio voice
output. If a higher quality amplified voice output is required,
connect the speaker to LS1. Here the volume can be adjusted using
VR2. However, a jumper must first be placed on J3 to select the
port pin, which is to be used to enable the interface card’s
HT82V733 audio amplifier. The user program can now enable the
HT82V733 amplifier by driving this same pin low. Otherwise,
connect the speaker to LS2 only.
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