wfjm.w11/tools/mcode/dz11/dz11echo.md

DZ11 echo tester

The dz11echo code echos any input entered or prints generated output on all DZ11 lines. Default is direct echo, only modification is to add a LF after CR. Other modes can be selected by two ESC plus a character:

  ESC + ESC + u -> uppercase
  ESC + ESC + l -> lowercase
  ESC + ESC + o -> octal echo (16 per line)
  ESC + ESC + a -> direct echo

The DZ11 device and line state and automatic generation of output can be controlled and inspected via single character commands entered on the console

   ?   help text
   c   char: only rie
   s   silo: only sae
   a   auto: rie or sae
   i   info: print line status
  0-7  define current line
   h   hangup:  set dtr=0
   r   ready:   set dtr=1
   b   break:   set brk=0 and send one char
   u   unbreak: set brk=1
   g   generate test output on line
   q   quit generating test output

0 selects line 0, and a subsequent g will start generated output on that line 0.

If the board has LEDs the light pattern depends on DZ11 device state

  no lines connected:  2.11BSD style
  >0 lines connected:  RSX11-M style
  ring active:         msb: 11111111-00000000  lsb: ring mask
  co change: :         msb: 10101010-01010101  lsb: co   mask

Start on w11

See general notes on

• FPGA Board setup
• Rlink and Backend Server setup

Start dl11echo on an FPGA board for 2 DZ windows with

    console_starter -d DL0 &
    console_starter -d DZ0 &
    console_starter -d DZ1 &
    ti_w11 <opt> @dz11echo_run.tcl

with the options <opt> as described in Rlink and Backend Server setup.

Start on SimH

    console_starter -s -d DL0 &
    console_starter -s -d DZ0 &
    console_starter -s -d DZ1 &
    pdp11 dz11echo.scmd