The 1.5 Update document says on page 2 that:
312K or 356 blocks of contiguous memory is required to install Instand Pascal on a hard disk or on a RAM card.
This is incorrect.
The statement should be amended to:
A utility program, IP.Custom has been added so that you can install Instant Pascal on a hard disk or RAM card with at least 512 blocks (256K) of contiguous memory. Instant Pascal does not run on the Applied Engineering RAMDisk because the RAMDisk does not contain 512 contiguous blocks of memory (independent of the size of the RAMDisk).