Apple 2 Soft Switch

Inspired by Anthony's program over in c.s.a2 here is a Applesoft BASIC program to display a memory map and limited soft switches.

Commands

ESC = exit
SPC = toggle status lines to show description / soft-switch addresss

NOTE: The IO soft switch address don't exactly match the hardware switches due to:

a) some are contiguous b) some require multiple locations to activate (i.e. TEXT/GR and Lo-Res/Hi-Res)

Future Versions?

Removing the RW columns gives us a little more space on the right. Here is a mock-up:

v4    ___READ___ __WRITE___   
$FFFF|    ROM   |    ROM   |   C088 BANK2
$E000|__________|__________|  /C081 HRAMWRT
     |    ROM   |    ROM   | / C080 HRAMRD
$D000|__________|__________|/  C057 HIRES
     :__________:__________:   C055 PAGE2
$BFFF|    AUX   |    AUX   |\  C008 ALTZP
$6000|__________|__________| \ C004 RAMWRT
     |    AUX   |    AUX   |  \C002 RAMRD
$4000|__________|__________|   C000 80STORE

I/O Softswitch Memory Map Usage

$C0xy: 0 1 2 3 4 5 6 7 8 9 A B C D E F
  $0y: x x x x x x x x x x x x x x x x
  $1y: x x x x x x x x x x x x x x x x
  $2y: x x x x x x x x x x - x x x x x
  $3y: x x x x x x x x x x x x x x x x
  $4y: x x x x x x x x x - - - - - - x
  $5y: x x x x x x x x x x x x x x x x
  $6y: x x x x x x x x x - - - - x x x
  $7y: x - - x - - - x x x - - - - x x
  $8y: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
  $9y: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
  $Ay: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
  $By: 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
  $Cy: 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
  $Dy: 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
  $Ey: 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6
  $Fy: 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7

Legend:
  x    used
  -    Free
  0-7  Reserved for slot #

See:

https://www.kreativekorp.com/miscpages/a2info/iomemory.shtml

History

Ver 5

Added I/O Softswitch Map

Ver 4

Version number now shown in top left
Fixed 80STORE=1 display for HGR1 and TEXT1
Removed most odd addresses in the main 48 KB as they were cluttering up the display too much.