Z3BIOS4G

          This is the BIOS I use day in day out.  It supports ZCPR3, a
27.5K print buffer, a 159K RAM disk and it buffers the BDOS and CCP making
warm boots faster and independant of having system tracks on the disk in 
drive A:.

          This uses an initialisation program RAMDINITD and the ramdrive is
D: NOT C:. (D for DRAM!).

          Version 1.4g is different from previous versions in that the RAM 
DISK is now handled by the ordinary BIOS routines Home, SetSector, etc
rather than having two sets of routines and swapping part of the BIOS jump
table.  I did this to make the system more compatible with SPOOL, UNIFORM,
etc which also modify the jump table.  It is slower than my original BIOS
but only by a fraction of a percent!!!

          This BIOS was never meant to be seen by anyone except me.  As a
result it is messy and hard to follow in places as part of the documentation
is stored in HAM (human access memory).  However anyone intending to implement
ZCPR3 may find it interesting.

          Z3BIOS4G is big because it contains an IOP, an ENV and a TCP as a
result it needs a patched version of Sysgen called sysgen8 which copies
more sectors.