ACC2087 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

ACC2087

ENHANCED SUPER CHIP

Unspecified 

ACC MicroTM

2087

*

Any write to 0F2h with index 0Axh will clear the byte pointer, which will set pointer

to low byte. The first read from 0F3h after writing the index will set the pointer to

high byte.

*

Only one byte pointer is shared by all paired register sets.

*

The first read from 0F3h will return the low byte, the second read will return the high byte.

3.

For those registers that do not use all the bits, unused bits status are undefined. Software needs to

mask out these bits when it restores.

4.

For DMA base address registers, word count registers, channel mode registers, and channel mask

registers, the value read back from the shadow registers are the original values loaded.

5.

The value read back from shadow registers for the timer count are the original values loaded.

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