[4/4] CP/M for Spectrum-128

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Everything that was described in the previous messages was done in 1993. Here are
the improvements of 1994-1995:

BIOS Ver 2.11
IM1 interrupt mode instead of IM2

BIOS Ver 2.2
initial diagnostics, support for 8255 and LPrint III

BIOS Ver 2.3
Disk drives A, B, C - physical, D is mapped to A (phantom
disk). Initial check for the presence of physical disk drives. Initial diagnostics have been expanded. Added
ESC+'j' and ESC+7Fh to the console. When printing on a printer, conversion is carried out (the same as for output to the console). The time
for displaying each character on the screen has been reduced by an average of
470 cycles (it has become one and a half times faster).

(phantom disk D: used when copying on one
drive. For example, if you want to copy a file from one
drive to another, and you only have one drive (A:), then
you can say copying program so that it copies from
A: to D:. In this case, the system will periodically ask
to change the source disk and destination disk in drive A).

=============================================================================================== This system worked for Denis Sotchenko (2:5020/301.7). In fact, he turned out to be a beta tester of this system and all the improvements made in 1994-1995 (Ver2.11 - 2.3) were
made at his request.

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In order to make a system disk, you need to download the file from me
ZXCPM.ZIP, or SYSZXCPM.LZH. The first archive contains an image of the system disk obtained using TeleDisk. This disk contains, in addition to the system, docks and
some useful utilities that allow you to create system disks already under
CP/Mom. In the second archive there is only a utility for transferring the system to system
tracks and the system itself in binary form.

Best wishes! Michael KLUG