Mr.Atari's REV_2 Operating System.                           september-2015



This is a atari REV_2 Operating System, patched with highspeed-support.


Only 3 drives have UHSIO-support.
D1: D2: D3:
This due to limited amount of zeropage available for IO ($30-$35 and $38-$3C)

Changes:
-NMI, removed ATTRACT and changed CRITIC handling to support 128bps
-IRQ, changed IRQ-handling for serial and timer2 event to conditional
-TAPES, LOADING can be at any baudrate upto 4200, tapeheader > 1s and irg > 16ms
        SAVING is not changed, except you won't hear the tapeheader over the monitor
-IO, Standard HSIO-detection, added WARP ($40=external clock) and Mr./|\ ($80=bit_7 @ 128bps)



Beside this, the OS should perform and act as a standard ATARI-OS.



Enjoy.