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util/time/VClockFix.lha

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Showing: m68k-amigaos iconppc-amigaos iconppc-morphos iconi386-aros iconi386-amithlon iconppc-warpup iconppc-powerup icongeneric iconother icon
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Short:Vampire V4SA fast system-clock workaround
Author: vclockfix at amigaworld.de (Matthias Muench)
Uploader:vclockfix amigaworld de (Matthias Muench)
Type:util/time
Version:1.3
Architecture:m68k-amigaos
Date:2026-09-24
Requires:V4SA with Core 11350, AmigaOS 3.2.3, timer.device 46.1
Download:util/time/VClockFix.lha - View contents
Readme:util/time/VClockFix.readme
Downloads:2

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.


Contents of util/time/VClockFix.lha
 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[Amiga]                   1180    1494  79.0% -lh5- 26dc Sep 23 17:29 VClockFix-1.3.info
[Amiga]                   2788    6336  44.0% -lh5- fe48 Sep 23 17:28 VClockFix-1.3/README.de
[Amiga]                   2463    5697  43.2% -lh5- 9e2d Sep 23 17:29 VClockFix-1.3/README.en
[Amiga]                    127     164  77.4% -lh5- f765 Sep 23 17:10 VClockFix-1.3/SHA256SUMS
[Amiga]                   2962    5052  58.6% -lh5- cef4 Sep 23 17:10 VClockFix-1.3/VClockFix
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         5 files    9520   18743  50.8%            Sep 24 00:08
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