ADDS Regent emulation

[davidrg]

This is an initial attempt at emulating ADDS Regent terminals. At this time the implementation will be based on documented behaviour only as I have no access to physical examples of these terminals to check actual behaviour. Where the documentation is vague on detail, features may be left out until I can get someone with a real terminal to confirm actual behaviour.

Regent 25

Documentation: On Bitsavers

Implemented:

• Basic escape sequences and control characters
• Basic Keyboard map
• Numeric key pad map: numeric keys as function keys. Perhaps use "set terminal keypad-mode" to toggle this keymap.

Not implemented:

• DC2/DC4 AUX port on/off: documentation is unclear on what the expected behaviour should be
• International character sets: no documentation available on what these are
• No Regent-specific monitor mode is enabled - instead use CKWs existing debug mode (set terminal debug on)
• Audible key feedback - instead use a mechanical keyboard

Known implementation differences vs a real terminal:

• Both types of keyboard lock (ADDS Consul 580 and Normal) are supported at all times (the real terminal has a switch to select between the two)

Relevant settings:

• auto scroll on/off - set terminal autoscroll
• auto line feed - set terminal newline-mode on
• cursor: set terminal cursor block/underline blink/noblink

Regent 200

This is largely a superset of the Regent 25.

Documentation: On Bitsavers

Implemented:

• Function keys
• Page Mode: ESC U
• Message Mode: ESC u
• Local Mode: ESC t
• Online Mode: ESC T
• Form Generation Mode: ESC R
• Set Line Drawing Mode: ESC 1
• Exit Line Drawing Mode: ESC 2
• Tab - move to first position in next unprotected field: HT
• Back Tab: ESC 0
• Status Message: ESC ENQ
• Transmit: ESC DC1
• Reset terminal: ESC s
• Print Local (variable and Null): ESC X
• Print Local (All): ESC x
• Underline Video: ESC NULL `
• Reverse Video: ESC NULL P
• Blink: ESC NULL B
• Half Intensity: ESC NULL A
• Set Video Attribute: ESC NULL
• Erase Variable Data: ESC G
• Erase Field: ESC K
• Set Aux Port Baud Rate: ESC A X - this should be consumed and ignored

Option Package:

• Delete Character (inline): ESC E
• Delete Character (Page): ESC e
• Insert Character (Inline): ESC F
• Insert Character (Page): ESC f
• Delete Line: ESC 1
• Insert Line: ESC M

Not Implemented;

• Nothing in particular so far

Known implementation differences vs a real terminal:

• Nothing in particular so far

Relevant settings:

• None so far