1 var, quiet

array dtmf-col 1209 freq>div , 1336 freq>div , 1477 freq>div ,
array dtmf-row 697 freq>div , 770 freq>div , 852 freq>div , 941 freq>div ,

( 0  1  2
  3  4  5   
  6  7  8
 -3 -1 -2 )

-2 const D*
-1 const D#

: noisy quiet @ if rdrop then ;

: dtmf ( digit -- f1 f2 ) 1- 
  dup 0 < if abs 3 % 3 swap else 3 /mod then 
  cells dtmf-col + @ swap cells dtmf-row + @ ;
: dial ( digit -- ) dtmf 20 arp 7 sleep-csec ;
: dialch ( b -- ) >r
  r@ [ key * lit ] = if D* dial then
  r@ [ key # lit ] = if D# dial then
  r@ [ key 0 lit ] >= if r@ [ key 9 lit ] <= if 
    r@ [ key 0 lit ] - dial 
  then then rdrop ;

: dialst ( st -- ) chars each i dialch next ;
: dialtone [ 350 freq>div lit 440 freq>div lit ] 200 arp ;
: offhook 30 sleep-csec 3 2 boop 15 sleep-csec 7 2 boop 10 sleep-csec ;

2100 freq>div const carrier-div
980 freq>div const hs-low
1180 freq>div const hs-high
1650 freq>div const hs2-low
1850 freq>div const hs2-high

: carrier-drop 0x6000 1 boop ;
: carrier ( csec -- ) carrier-div swap boop carrier-drop ;
: scramblebip ( div div -- ) rand 2 % if swap then drop 1 boop ;
: hs-with-carrier ( csec -- )
  over-csec each carrier-div 1 boop hs-low hs-high scramblebip next ;
: dual-hs ( csec -- ) over-csec each 
    hs-low hs-high scramblebip hs2-low hs2-high scramblebip 
  next ;
: probe-hi ( csec -- ) [ 2400 freq>div lit 1200 freq>div lit ] <rot arp ;
: probe-lo ( csec -- ) [ 600 freq>div lit 300 freq>div lit ] <rot arp ;
: fullduplex ( csec -- ) 
  over-csec each rand 3700 % 20 + freq>div >spk next silence ;
: handshake 
  30 carrier 45 carrier 75 carrier 30 carrier
  30 hs-with-carrier 75 hs-with-carrier 45 hs-with-carrier 
  37 dual-hs 37 dual-hs 37 dual-hs 30 dual-hs 
  45 probe-hi 50 probe-lo 15 probe-hi 60 probe-lo 60 probe-hi 
  300 fullduplex ;

( terminal words )
: fixcursor texty 8 << textx | movecursor ;
: nl nextline fixcursor ;
: emit draw-char fixcursor ;
: xmit ( st -- ) chars each i emit 1 sleep-csec next ;
: call ( st -- ) s" ATDT" xmit dup xmit nl noisy offhook dialtone dialst ;

: connect ( st -- ) call noisy 200 sleep-csec handshake ;

{ : X ( v -- v ) 2* 1 | ;
  : o ( v -- v ) 2* ; }
7 const logoh
6 const logocount

array logo
0 X X X X X o o o >t
0 X X o o X X o o >t
0 X X o o X X o o >t
0 X X o o X X o o >t
0 X X o o X X o o >t
0 X X o o X X o o >t
0 X X X X X o o o >t

0 o o o o o o o o >t
0 o o X X X o o o >t
0 o o o o o o o o >t
0 o o X X X o o o >t
0 o o o X X o o o >t
0 o o o X X o o o >t
0 o X X X X X X o >t

0 o o o o o o o o >t
0 o o o o o o o o >t
0 o o X X X X X o >t
0 o X X o o X X o >t
0 o X X o o X X o >t
0 o X X o o X X o >t
0 o o X X X X X X >t

0 o o X X X o o o >t
0 o o o X X o o o >t
0 o o o X X o o o >t
0 o o o X X o o o >t
0 o o o X X o o o >t
0 o o o X X o o o >t
0 o o X X X X o o >t

0 o o o o o o o o >t
0 o o o o o o o o >t
0 o o X X X X o o >t
0 o X X o o X X o >t
0 o X X X X X X o >t
0 o X X o o o o o >t
0 o o X X X X X o >t

0 o o o o o o o o >t
0 o o o o o o o o >t
0 X X o X X X o o >t
0 o X X X o X X o >t
0 o X X o o o o o >t
0 o X X o o o o o >t
0 X X X X o o o o >t

array logobits 
0xb2 b, 0xdd b, 0xf0 b, 0xde b, 0x1f b, 0x7f b, 0xfe b, 0x0a b, 0xba b, 
target logobits - const logobit-count

var curr-logobit
: logobit curr-logobit @ logobits + ub@ ;
: nextlogo curr-logobit @ 1+ logobit-count % curr-logobit ! ;

: draw-logo
  80 logocount 8 * - 2/ 3 textxy!
  logo logo logoh + for each textx 0 logocount for each
    j i logoh * + ub@ 
    8 times each dup 0x80 & 
      if logobit else [ key   lit ] then draw-char 2* 
    next drop
  next nextline textx! next ;

: animate-logo
  logobit-count 3 * times each draw-logo 10 sleep-csec nextlogo next ;

: splash
  blue bg! lgray fg! 32 fill-page lcyan fg! animate-logo 
  nl nl 15 textx! lblue bg! lred fg! s" Unregistered version" xmit 
  blue bg! lcyan fg! s" - you have used 13246 / 30" xmit nl 
  15 textx! s" days of your limited trial!" xmit nl nl 200 sleep-csec 
  lgray fg! ;

: go splash 0 15 textxy! 
  s" 5551212" connect s" CONNECT 57600" xmit nl ;

' go ' main redefine

dbg" saving"

{ s" dialer.com" writecom }