Re: The Apple ][ was cool!

["Ben Yates" <byatesiii@worldnet.att.net>]

Roy Miller wrote in message <3B5772E3.2C52B20@iliveinnebraska.com>...
>The only "pure" 16 bit chip I know of is the TI 9900. 16 bit data and
address
>bus, 16 sets of 16 16 bit registers (though the "registers" were part of
the
>computer's 64K address space) so you could multitask (time splice) by
>rotating through the 16 different sets of 16 16 bit registers.
>
>Roy

Actually, you could have as many sets of registers as memory would allow
(64k directly addressable), and they could even OVERLAP.

Calling a new subroutine with a new set of registers is as easy as:

 BLWP @SUB1
.
.
.
SUB1 DATA SUBWS,SUBRT1
SUBWS BSS 32
SUBRT1 * code here
.
.
.
 RTWP * Returns to caller with old registers...