Acorn User


Within The BBC
By Losco
BBC Model B

 
Published in Acorn User #043

Addresses Galore

This is one of those books you see in the shop which immediately impresses you with its lists of numbers and tables: then, when you get home and sit comfortably, you wonder why your bothered with it.

This particular tome is rather thick; it covers OS1.2, Basic 1, Basic 2, HiBasic, DFS0.9, NFS 3.34, 6502 second processor and DNFS. Simply, it lists the entry pints in just about every routine there is within the above. This I admit is quite useful for the MOS and Basics, but the other items have now been superseded and have little value.

The rest of the book deals with each ROM again but lists all subroutine calls and destinations, jumps and other such useless nonsense - in effect, pages of addresses, addresses and yes, more addresses.

The author would have done much better to confine his efforts to giving details of entry points to MOS and Basic and descriptions of how each routine functions. Such details might have been beneficial to some readers - those armed with disassembly listings of the ROMs in question.

Bruce Smith