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Does APB support sparse data transfer?

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hwanslaw

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APB v2.0 (AMBA4) supports PSTRB signals to support sparse data transfer.

but, how the sparse data transfer to be supported before the release of the APB v2.0?

PADDR is generated by APB bridge and it is identical to AHB address, HADDR

HADDR is aligned by address offset BUT APB (before v2.0) does not support aligning byte lanes

is it possible to transfer sparse data without PSTRB signals? with APB v1.0 (before 2.0)
 

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