Skip to content
Thoroughbred Software InternationalThoroughbred Software InternationalThoroughbred DocumentationDocs

VFU Loading

VFU can be loaded and utilized through the following mnemonic codes:

‘SL’ - Start Load

‘EL’ - End Load

‘S2’ - Slew to Channel 2

‘S3’ - Slew to Channel 3

‘S4’ - Slew to Channel 4

‘S5’ - Slew to Channel 5

‘S6’ -Slew to Channel 6

‘S7’ - Slew to Channel 7

‘S8’ - Slew to Channel 8

‘VT’ - Vertical Tab (Slew to Channel 6)

‘FF’ - Form Feed (Slew to Channel 1; defaults to 66 ’LF’s)

EXAMPLES

If the VFU is to be loaded with a channel 4 “punch” on line 5, a vertical tab on line 7, a channel 7 on line 12, and a total form length of 20, the following code is necessary:

10 OPEN (1) “LP”
20 PRINT (1) ‘SL’, “10004060000700000000”, ‘EL’

  1. The string between the ‘SL’ and ‘EL’ can only contain numbers. These are translated into the appropriate codes for the printer.
  2. A zero is used as a fill character.
  3. A six represents a vertical tab.
  4. A one represents top of form. There should only be one per VFU load.
  5. The length of the string corresponds to the number of lines on a page.
  6. Only one channel can be designated per line position.

From the Thoroughbred Basic Technical Appendices, version 8.9.1. Open this page in the PDF