Hardware:
C= A1200
Blizzard1260 060@50MHz 16MB Fast (MapROM disabled to see true ROM speed)
Blizard SCSI-kit IV 128MB Fast
Kickstart 3.2.1

Software:
AmigaOS 3.2.1
Phase5 68060.library
FastExec
DblNTSC screenmode lowered to 2c during test to not slow down chip access

9.Ram Disk:> bustest fast rom chip 
BusSpeedTest 0.19 (mlelstv)   Buffer:     262144 Bytes, Alignment: 32768
========================================================================
memtype   addr       op         cycle     calib         bandwidth
fast      $60490000  readw      66.0 ns   normal      30.3 * 10^6 byte/s
fast      $60490000  readl     109.2 ns   normal      36.6 * 10^6 byte/s
fast      $60490000  readm     112.1 ns   normal      35.7 * 10^6 byte/s
fast      $60490000  writew     80.6 ns   normal      24.8 * 10^6 byte/s
fast      $60490000  writel    164.4 ns   normal      24.3 * 10^6 byte/s
fast      $60490000  writem    164.3 ns   normal      24.4 * 10^6 byte/s
chip      $00030000  readw     911.3 ns   normal       2.2 * 10^6 byte/s
chip      $00030000  readl     909.2 ns   normal       4.4 * 10^6 byte/s
chip      $00030000  readm     906.9 ns   normal       4.4 * 10^6 byte/s
chip      $00030000  writew    706.2 ns   normal       2.8 * 10^6 byte/s
chip      $00030000  writel    707.4 ns   normal       5.7 * 10^6 byte/s
chip      $00030000  writem    705.3 ns   normal       5.7 * 10^6 byte/s
rom       $00F80000  readw     183.5 ns   normal      10.9 * 10^6 byte/s
rom       $00F80000  readl     336.9 ns   normal      11.9 * 10^6 byte/s
rom       $00F80000  readm     333.7 ns   normal      12.0 * 10^6 byte/s