Last update: April 19th 2017

Ti99Hdx with nanoPEB option

Download CfHdxS1 version 2.0 now
ti dsk image as zipped disk-image (ZIP)

CfHdxS1 is a file / program manager special for the nanoPEB card and is derived from Diskmanager 2000. The main feature of CfHdxS1 is that it can communicate with the Ti99Hdx server over the serial port so that in an easy way files can be copied to and from the nanoPEB's CompactFlash card.

It is also possible to use the CfHdxS1 program with the Texas Instruments RS232 interface PHP1220. In this case the RS232/1 serial port is used to communicate with the Ti99Hdx server.

PgmHdx catalog
An impression of CfHdxS1.

See also the Diskmanager 2000 (or Dm2k) manual.

And this program also supports (if a nanoPEB is used):

  • Mount another volume for DSK1 (ctrl-1), DSK2 (ctrl-2) or DSK3 (ctrl-3)
  • Select the next volume (ctrl-D) if DSK1, DSK2 or DSK3 is the source device
  • Select the previous volume (ctrl-S) if DSK1, DSK2 or DSK3 is the source device


But this program doesn't support:
  • Formatting of floppy disks
  • Printing of catalogs
  • Copy / Move / Delete directory structures


To use the nanoPEB device for the Ti99Hdx project you only need to create a cable to connect the nanoPEB's serial port to a COM-port of the PC. The program CFHDXS1 (serial version) can be used for transferring files to and from the PC. The COM port settings for the PC program Ti99Hdx are 38400 Baud, 8 databits, even parity and one stopbit.

The nanoPEB
The nanoPEB
The nanoPEB
Can be used unmodified

Serial cable

For connecting your nanoPEB serial interface to a COM port of a PC you can use a standard RS232-cross cable. The connected signals of the nanoPEB's serial port is as follows:
        #1 - Not connected
        #2 - RXD
        #3 - TXD
        #4 - Not connected
        #5 - GND
        #6 - Not connected
        #7 - RTS
        #8 - CTS
        #9 - Not connected

CfHdx uses to CTS signal to detect if the Ti99Hdx program is running on the PC.

Click nanoPEB SIO cable here to view a schematic for the nanoPEB SIO cable.