diff options
Diffstat (limited to 'qemu/roms/SLOF/board-js2x/slof/freq.fs')
| -rw-r--r-- | qemu/roms/SLOF/board-js2x/slof/freq.fs | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/qemu/roms/SLOF/board-js2x/slof/freq.fs b/qemu/roms/SLOF/board-js2x/slof/freq.fs deleted file mode 100644 index 9f1d36d78..000000000 --- a/qemu/roms/SLOF/board-js2x/slof/freq.fs +++ /dev/null @@ -1,39 +0,0 @@ -\ ***************************************************************************** -\ * Copyright (c) 2004, 2008 IBM Corporation -\ * All rights reserved. -\ * This program and the accompanying materials -\ * are made available under the terms of the BSD License -\ * which accompanies this distribution, and is available at -\ * http://www.opensource.org/licenses/bsd-license.php -\ * -\ * Contributors: -\ * IBM Corporation - initial implementation -\ ****************************************************************************/ - - -\ Use the HPET to calculate various frequencies. - -\ Make HPET run. -1 10 hpet! - -\ Set PMC1 to count CPU cycles. -f00 mmcr0! - -d# 1000000000000000 4 hpet@ / CONSTANT hpet-freq - -: get-times tbl@ pmc1@ f0 hpet@ ; - -\ Calculate the CPU and TB frequencies. -: calibrate get-times dup >r swap >r swap >r hpet-freq d# 100 / + >r - BEGIN get-times dup r@ < WHILE 3drop REPEAT r> drop - rot r> - ffffffff and \ TB - rot r> - ffffffff and \ CPU - rot r> - >r \ HPET - hpet-freq * r@ / swap - hpet-freq * r> / ; - -: round-to tuck 2/ + over / * ; -calibrate TO tb-frequency d# 100000000 round-to TO cpu-frequency - -\ Stop HPET. -0 10 hpet! |