VClockFix 1.3

Vampire V4SA fast system-clock workaround

Short:        Vampire V4SA fast system-clock workaround
Author:       vclockfix@amigaworld.de (Matthias Muench)
Uploader:     vclockfix amigaworld de (Matthias Muench)
Type:         util/time
Version:      1.3
Requires:     V4SA with Core 11350, AmigaOS 3.2.3, timer.device 46.1
Architecture: m68k-amigaos

VClockFix works around a boot-dependent AmigaOS clock error on the Vampire
V4 Standalone. On affected boots, timer.device selects CIAA TOD and the
system clock runs about 18.6 percent too fast after SAGA/RTG activation.

The program validates timer.device 46.1 and redirects the known bad timer
route to EClock in RAM. Unknown versions or layouts are left untouched.

Usage:

  VClockFix

applies only the timer-route workaround. The optional command

  VClockFix CALIBRATE

also selects the measured 709700 Hz EClock rate for the tested V4SA/Core
11350. A 24-hour SNTP test showed about 0.036 seconds of residual drift per
day, compared with approximately 38 seconds per day before calibration.

All changes are RAM-only and disappear after reboot. The archive includes
German and English documentation and checksums.

Other Cores are not tested.