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:

• [x] Basic escape sequences and control characters
• [x] 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:

• [x] 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