|Front||Keys at reset:
. Run RAM test V Print boot ROM version 1, F1 Hard Disk boot 2, F2 Floppy Disk boot 3, F3 Model III boot RIGHT-SHIFT RS-232 boot P Prompt disk switch at ROM-image load N Ignore OS request for ROM-image load L Force reload ROM-image BREAK Set flag at 405BH ENTER Terminate keyboard routine LEFT-SHIFT Reserved CTRL Reserved CAPS Reserved
Chromedome created an interface that actually works. See Cheapo-IDE-interface-for-Model-4p-running-MM-CP-M for more info on this interface.
Remember to reorient the IDE connector on the next board
Entered the following BASIC program (with a disk connected):
10 AD=63 20 X=10 30 OUT 236,16 40 FOR Y= 0 TO X 50 PRINT Y+AD;" ";INP(Y+AD) 60 NEXT Y
The result was:
63 255 64 0 65 1 66 1 67 1 68 0 69 0 70 80 71 80 72 1
The Seagate (ST3144A) doesn't work. Currently testing with a Conner (CP3008E).
SYSTEM (DRIVE=2, DRIVER="HDDVR6") TRSIDE - IDE Disk Driver for LDOS 6.x/5.x Enter drive select address <1-4>: 1 Enter total number of heads on drive <1-8>: 8 Enter physical tracks per surface: 22 Heads already in use <.-.-.-.-.-.-.-.> Enter number of heads for partition <1-8>: 2 Enter starting head: 1
Now a blinking "H" should appear in the upper right side of the screen.
With some drives it does, but the drive is not addressed.
External IDE for 8-bit bus designs
Last update: 2014-06-09