-TP43.S19

This patch for Versados 4.3 on (BT01:0.vmes10.versados.sy) changes the TIMERINTV from 15.625ms to 55ms

It is required because the emulator can not generate periodic intervals that are NOT multiples of 55ms.

This makes VersaDOS keep time better. It does not loose much time. It can still loose time, sometimes , when changing the Display options. Or if the emulator is paused to do processing of user interface GUI controls. During GUI interfacing the emulator can not run. 


-TP44.S19

This patch for Versados 4.4 on (BT01:0.vmes10.versados.sy) changes the TIMERINTV from 15.625ms to 55ms


-TP45.S19

This patch for Versados 4.5 on (BT06:0.vmes10.versados.sy) changes the TIMERINTV from 15.625ms to 55ms


- How to Install HOT patches

any s19 (MX - S-REC) file can be loaded directly into memory.

these patches only generate the exact replacement code for making the change, and can be directly loaded into memory, after the OS is in memory, thus making the patch to the IN-MEMORY image of the OS.. 

the timer patches should be made after the INIT task runs. The init task will set up the timer interrupt for 15.625 ms. 

as soon as you see the request to login for session &1, you should STOP the emulator, load the patch and then RUN the emulator, and complete the login.

WARNING---- if you do a sysgen, then you probably will also need to figure out a new patch, due to the fact that the locations where the patch belongs may change...