Home » Personal collection » Acorn tapes » Electron_User » Electron_User_tape31a_acorn_eu_1992_january.wav » Blanker

Blanker

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk: Home » Personal collection » Acorn tapes » Electron_User » Electron_User_tape31a_acorn_eu_1992_january.wav
Filename: Blanker
Read OK:
File size: 0DAB bytes
Load address: FFFF0E00
Exec address: FFFF802B
Duplicates

There are 3 duplicate copies of this file in the archive:

File contents
   10REM Screen Blanker
   20REM by Steven Flintham
   30REM (c) The Micro User
   40MODE 7
   50VDU 23;8202;0;0;0;
   60PROCtitle
   70PROCinitialise
   80PROCtime_limit
   90PROCassemble
  100PROCinstructions
  110END
  120:
  130DEF PROCtitle
  140PRINTTAB(9,0);CHR$(141);CHR$(132);CHR$(157);CHR$(131);"Screen Blanker";SPC(2);CHR$(156)
  150PRINTTAB(9,1);CHR$(141);CHR$(132);CHR$(157);CHR$(131);"Screen Blanker";SPC(2);CHR$(156)
  160PRINTTAB(0,2);CHR$131;"by Steven Flintham";SPC(2);"(c) The Micro User"
  170ENDPROC
  180:
  190DEF PROCinitialise
  200int_vec%=&220
  210code%=&900
  220osword%=&FFF1
  230osbyte%=&FFF4
  240oswrch%=&FFEE
  250key%=0
  260ENDPROC
  270:
  280DEF PROCtime_limit
  290LOCAL wait%,wait$
  300PRINT'"What is the blanking delay time in"'"minutes?";CHR$(131);
  310INPUT ""delay
  320wait%=delay*6000
  330wait$="FF"+STR$~(0-wait%)
  340wait_lsb%=EVAL("&"+RIGHT$(wait$,2))
  350wait_msbs%=EVAL("&"+LEFT$(wait$,8))
  360ENDPROC
  370:
  380DEF PROCassemble
  390FOR opt%=0 TO 2 STEP 2
  400P%=code%
  410[OPT opt%
  420.set_up%
  430LDA int_vec%:CMP #blank% MOD 256
  440BEQ exit_set_up%
  450STA old_vec%
  460LDA int_vec%+1:CMP #blank% DIV 256
  470BEQ exit_set_up%
  480STA old_vec%+1
  490LDA #blank% MOD 256:STA int_vec%
  500LDA #blank% DIV 256:STA int_vec%+1
  510LDA #247:LDX #76:LDY #0:JSR osbyte%
  520LDA #248:LDX #set_up% MOD 256
  530LDY #0:STY blank_flag%:JSR osbyte%
  540LDA #249:LDX #set_up% DIV 256
  550LDY #0:JSR osbyte%
  560.exit_set_up%
  570LDA #14:LDX #2:JSR osbyte%
  580LDX #5:JSR osbyte%
  590JMP set_timer%
  600.blank%
  610PHP:PHA
  620CMP #2:BEQ key_pressed%
  630CMP #5:BEQ time_out%
  640PLA:PLP
  650JMP (old_vec%)
  660.key_pressed%
  670TXA:PHA:TYA:PHA
  680CPY #key%:BEQ user_blank%
  690JSR set_timer%
  700LDA blank_flag%
  710CMP #128:BEQ screen_blanked%
  720.exit%
  730PLA:TAY:PLA:TAX:PLA:PLP
  740JMP (old_vec%)
  750.user_blank%
  760LDA blank_flag%:BEQ do_user_blank%
  770CMP #128:BEQ do_user_blank%
  780CMP #127:BNE exit%
  790LDA #0:STA blank_flag%
  800JMP restore_screen%
  810.do_user_blank%
  820LDA #127
  830JSR blank_screen%
  840BEQ exit%
  850.set_timer%
  860LDA #4
  870LDX #time_limit% MOD 256
  880LDY #time_limit% DIV 256
  890JMP osword%
  900.time_limit%
  910OPT FNequb(wait_lsb%)
  920OPT FNequd(wait_msbs%)
  930.screen_blanked%
  940LDA #0:STA blank_flag%
  950JMP restore_screen%
  960.restore_screen%
  970JSR line_len1%
  980LDA #135:JSR osbyte%
  990CPY #4:BMI length_80%
 1000LDA #40:BNE length_set%
 1010.length_80%
 1020LDA #80
 1030.length_set%
 1040JSR oswrch%
 1050JSR line_len2%
 1060JMP exit%
 1070.time_out%
 1080TXA:PHA:TYA:PHA
 1090JSR bleep%
 1100LDA blank_flag%:CMP #127:BEQ exit%
 1110LDA #128
 1120JSR blank_screen%
 1130JMP exit%
 1140.blank_screen%
 1150STA blank_flag%
 1160JSR line_len1%
 1170LDA #0:JSR oswrch%
 1180JMP line_len2%
 1190.line_len1%
 1200LDA #23:JSR oswrch%
 1210LDA #0:JSR oswrch%
 1220LDA #1:JMP oswrch%
 1230.line_len2%
 1240LDX #6
 1250LDA #0
 1260.line_len2_loop%
 1270JSR oswrch%
 1280DEX
 1290BNE line_len2_loop%
 1300RTS
 1310.bleep%
 1320LDA #7
 1330LDX #bleep_data% MOD 256
 1340LDY #bleep_data% DIV 256
 1350JMP osword%
 1360.bleep_data%
 1370OPT FNequw(1)
 1380OPT FNequw(-10)
 1390OPT FNequw(100)
 1400OPT FNequw(5)
 1410.old_vec% OPT FNequw(0)
 1420.blank_flag% OPT FNequb(0)
 1430]
 1440NEXT
 1450CALL code%
 1460ENDPROC
 1470:
 1480DEF FNequb(byte%)
 1490?P%=byte%:P%=P%+1
 1500=opt%
 1510:
 1520DEF FNequw(db_byte%)
 1530?P%=db_byte% MOD 256
 1540P%?1=db_byte% DIV 256
 1550P%=P%+2
 1560=opt%
 1570:
 1580DEF FNequd(word%)
 1590!P%=word%:P%=P%+4
 1600=opt%
 1610:
 1620DEF PROCinstructions
 1630PRINT'"The code has now been assembled."
 1640PRINT'"If no key is pressed for ";STR$(delay%);" minutes"'"then the screen will blank itself"'"automatically. Pressing any key will"'"restore the display."
 1650PRINT'"The screen can also be blanked by"'"pressing CTRL @. If this is done, CTRL"'"@ must be pressed again to restore the"'"screen."
 1660PRINT'"Use *SAVE name ";STR$~(code%);" ";STR$~(P%);" to save the"'"code."
 1670ENDPROC

� Screen Blanker
� by Steven Flintham
� (c) The Micro User
(� 7
2� 23;8202;0;0;0;
<
�title
F�initialise
P�time_limit
Z
�assemble
d�instructions
n�
x:
�� �title
�C�9,0);�(141);�(132);�(157);�(131);"Screen Blanker";�(2);�(156)
�C�9,1);�(141);�(132);�(157);�(131);"Screen Blanker";�(2);�(156)
�>�0,2);�131;"by Steven Flintham";�(2);"(c) The Micro User"
��
�:
�� �initialise
�int_vec%=&220
�code%=&900
�osword%=&FFF1
�osbyte%=&FFF4
�oswrch%=&FFEE
�
key%=0
�
:
� �time_limit
"� wait%,wait$
,=�'"What is the blanking delay time in"'"minutes?";�(131);
6
� ""delay
@wait%=delay*6000
Jwait$="FF"+�~(0-wait%)
Twait_lsb%=�("&"+�wait$,2))
^wait_msbs%=�("&"+�wait$,8))
h�
r:
|� �assemble
�� opt%=0 � 2 � 2
�P%=code%
�
[OPT opt%
�.set_up%
�"LDA int_vec%:CMP #blank% � 256
�BEQ exit_set_up%
�STA old_vec%
�$LDA int_vec%+1:CMP #blank% � 256
�BEQ exit_set_up%
�STA old_vec%+1
�"LDA #blank% � 256:STA int_vec%
�$LDA #blank% � 256:STA int_vec%+1
�'LDA #247:LDX #76:LDY #0:JSR osbyte%
LDA #248:LDX #set_up% � 256
&LDY #0:STY blank_flag%:JSR osbyte%
LDA #249:LDX #set_up% � 256
&LDY #0:JSR osbyte%
0.exit_set_up%
:LDA #14:LDX #2:JSR osbyte%
DLDX #5:JSR osbyte%
NJMP set_timer%
X.blank%
bPHP:PHA
lCMP #2:BEQ key_pressed%
vCMP #5:BEQ time_out%
�PLA:PLP
�JMP (old_vec%)
�.key_pressed%
�TXA:PHA:TYA:PHA
�CPY #key%:BEQ user_blank%
�JSR set_timer%
�LDA blank_flag%
� CMP #128:BEQ screen_blanked%
�
.exit%
�PLA:TAY:PLA:TAX:PLA:PLP
�JMP (old_vec%)
�.user_blank%
�&LDA blank_flag%:BEQ do_user_blank%
CMP #128:BEQ do_user_blank%
CMP #127:BNE exit%
LDA #0:STA blank_flag%
 JMP restore_screen%
*.do_user_blank%
4LDA #127
>JSR blank_screen%
H
BEQ exit%
R.set_timer%
\
LDA #4
fLDX #time_limit% � 256
pLDY #time_limit% � 256
zJMP osword%
�.time_limit%
�OPT �equb(wait_lsb%)
�OPT �equd(wait_msbs%)
�.screen_blanked%
�LDA #0:STA blank_flag%
�JMP restore_screen%
�.restore_screen%
�JSR line_len1%
�LDA #135:JSR osbyte%
�CPY #4:BMI length_80%
�LDA #40:BNE length_set%
�.length_80%
�LDA #80
.length_set%
JSR oswrch%
JSR line_len2%
$
JMP exit%
..time_out%
8TXA:PHA:TYA:PHA
BJSR bleep%
L&LDA blank_flag%:CMP #127:BEQ exit%
VLDA #128
`JSR blank_screen%
j
JMP exit%
t.blank_screen%
~STA blank_flag%
�JSR line_len1%
�LDA #0:JSR oswrch%
�JMP line_len2%
�.line_len1%
�LDA #23:JSR oswrch%
�LDA #0:JSR oswrch%
�LDA #1:JMP oswrch%
�.line_len2%
�
LDX #6
�
LDA #0
�.line_len2_loop%
�JSR oswrch%
DEX

BNE line_len2_loop%
RTS
.bleep%
(
LDA #7
2LDX #bleep_data% � 256
<LDY #bleep_data% � 256
FJMP osword%
P.bleep_data%
ZOPT �equw(1)
dOPT �equw(-10)
nOPT �equw(100)
xOPT �equw(5)
�.old_vec% OPT �equw(0)
�.blank_flag% OPT �equb(0)
�]
��
�� code%
��
�:
�� �equb(byte%)
�?P%=byte%:P%=P%+1
�	=opt%
�:
�� �equw(db_byte%)
�?P%=db_byte% � 256
P%?1=db_byte% � 256
P%=P%+2
	=opt%
":
,� �equd(word%)
6!P%=word%:P%=P%+4
@	=opt%
J:
T� �instructions
^(�'"The code has now been assembled."
h��'"If no key is pressed for ";�(delay%);" minutes"'"then the screen will blank itself"'"automatically. Pressing any key will"'"restore the display."
r��'"The screen can also be blanked by"'"pressing CTRL @. If this is done, CTRL"'"@ must be pressed again to restore the"'"screen."
|C�'"Use *SAVE name ";�~(code%);" ";�~(P%);" to save the"'"code."
��
�
00000000  0d 00 0a 14 f4 20 53 63  72 65 65 6e 20 42 6c 61  |..... Screen Bla|
00000010  6e 6b 65 72 0d 00 14 18  f4 20 62 79 20 53 74 65  |nker..... by Ste|
00000020  76 65 6e 20 46 6c 69 6e  74 68 61 6d 0d 00 1e 18  |ven Flintham....|
00000030  f4 20 28 63 29 20 54 68  65 20 4d 69 63 72 6f 20  |. (c) The Micro |
00000040  55 73 65 72 0d 00 28 07  eb 20 37 0d 00 32 14 ef  |User..(.. 7..2..|
00000050  20 32 33 3b 38 32 30 32  3b 30 3b 30 3b 30 3b 0d  | 23;8202;0;0;0;.|
00000060  00 3c 0a f2 74 69 74 6c  65 0d 00 46 0f f2 69 6e  |.<..title..F..in|
00000070  69 74 69 61 6c 69 73 65  0d 00 50 0f f2 74 69 6d  |itialise..P..tim|
00000080  65 5f 6c 69 6d 69 74 0d  00 5a 0d f2 61 73 73 65  |e_limit..Z..asse|
00000090  6d 62 6c 65 0d 00 64 11  f2 69 6e 73 74 72 75 63  |mble..d..instruc|
000000a0  74 69 6f 6e 73 0d 00 6e  05 e0 0d 00 78 05 3a 0d  |tions..n....x.:.|
000000b0  00 82 0c dd 20 f2 74 69  74 6c 65 0d 00 8c 43 f1  |.... .title...C.|
000000c0  8a 39 2c 30 29 3b bd 28  31 34 31 29 3b bd 28 31  |.9,0);.(141);.(1|
000000d0  33 32 29 3b bd 28 31 35  37 29 3b bd 28 31 33 31  |32);.(157);.(131|
000000e0  29 3b 22 53 63 72 65 65  6e 20 42 6c 61 6e 6b 65  |);"Screen Blanke|
000000f0  72 22 3b 89 28 32 29 3b  bd 28 31 35 36 29 0d 00  |r";.(2);.(156)..|
00000100  96 43 f1 8a 39 2c 31 29  3b bd 28 31 34 31 29 3b  |.C..9,1);.(141);|
00000110  bd 28 31 33 32 29 3b bd  28 31 35 37 29 3b bd 28  |.(132);.(157);.(|
00000120  31 33 31 29 3b 22 53 63  72 65 65 6e 20 42 6c 61  |131);"Screen Bla|
00000130  6e 6b 65 72 22 3b 89 28  32 29 3b bd 28 31 35 36  |nker";.(2);.(156|
00000140  29 0d 00 a0 3e f1 8a 30  2c 32 29 3b bd 31 33 31  |)...>..0,2);.131|
00000150  3b 22 62 79 20 53 74 65  76 65 6e 20 46 6c 69 6e  |;"by Steven Flin|
00000160  74 68 61 6d 22 3b 89 28  32 29 3b 22 28 63 29 20  |tham";.(2);"(c) |
00000170  54 68 65 20 4d 69 63 72  6f 20 55 73 65 72 22 0d  |The Micro User".|
00000180  00 aa 05 e1 0d 00 b4 05  3a 0d 00 be 11 dd 20 f2  |........:..... .|
00000190  69 6e 69 74 69 61 6c 69  73 65 0d 00 c8 11 69 6e  |initialise....in|
000001a0  74 5f 76 65 63 25 3d 26  32 32 30 0d 00 d2 0e 63  |t_vec%=&220....c|
000001b0  6f 64 65 25 3d 26 39 30  30 0d 00 dc 11 6f 73 77  |ode%=&900....osw|
000001c0  6f 72 64 25 3d 26 46 46  46 31 0d 00 e6 11 6f 73  |ord%=&FFF1....os|
000001d0  62 79 74 65 25 3d 26 46  46 46 34 0d 00 f0 11 6f  |byte%=&FFF4....o|
000001e0  73 77 72 63 68 25 3d 26  46 46 45 45 0d 00 fa 0a  |swrch%=&FFEE....|
000001f0  6b 65 79 25 3d 30 0d 01  04 05 e1 0d 01 0e 05 3a  |key%=0.........:|
00000200  0d 01 18 11 dd 20 f2 74  69 6d 65 5f 6c 69 6d 69  |..... .time_limi|
00000210  74 0d 01 22 11 ea 20 77  61 69 74 25 2c 77 61 69  |t..".. wait%,wai|
00000220  74 24 0d 01 2c 3d f1 27  22 57 68 61 74 20 69 73  |t$..,=.'"What is|
00000230  20 74 68 65 20 62 6c 61  6e 6b 69 6e 67 20 64 65  | the blanking de|
00000240  6c 61 79 20 74 69 6d 65  20 69 6e 22 27 22 6d 69  |lay time in"'"mi|
00000250  6e 75 74 65 73 3f 22 3b  bd 28 31 33 31 29 3b 0d  |nutes?";.(131);.|
00000260  01 36 0d e8 20 22 22 64  65 6c 61 79 0d 01 40 14  |.6.. ""delay..@.|
00000270  77 61 69 74 25 3d 64 65  6c 61 79 2a 36 30 30 30  |wait%=delay*6000|
00000280  0d 01 4a 1a 77 61 69 74  24 3d 22 46 46 22 2b c3  |..J.wait$="FF"+.|
00000290  7e 28 30 2d 77 61 69 74  25 29 0d 01 54 1e 77 61  |~(0-wait%)..T.wa|
000002a0  69 74 5f 6c 73 62 25 3d  a0 28 22 26 22 2b c2 77  |it_lsb%=.("&"+.w|
000002b0  61 69 74 24 2c 32 29 29  0d 01 5e 1f 77 61 69 74  |ait$,2))..^.wait|
000002c0  5f 6d 73 62 73 25 3d a0  28 22 26 22 2b c0 77 61  |_msbs%=.("&"+.wa|
000002d0  69 74 24 2c 38 29 29 0d  01 68 05 e1 0d 01 72 05  |it$,8))..h....r.|
000002e0  3a 0d 01 7c 0f dd 20 f2  61 73 73 65 6d 62 6c 65  |:..|.. .assemble|
000002f0  0d 01 86 14 e3 20 6f 70  74 25 3d 30 20 b8 20 32  |..... opt%=0 . 2|
00000300  20 88 20 32 0d 01 90 0c  50 25 3d 63 6f 64 65 25  | . 2....P%=code%|
00000310  0d 01 9a 0d 5b 4f 50 54  20 6f 70 74 25 0d 01 a4  |....[OPT opt%...|
00000320  0c 2e 73 65 74 5f 75 70  25 0d 01 ae 22 4c 44 41  |..set_up%..."LDA|
00000330  20 69 6e 74 5f 76 65 63  25 3a 43 4d 50 20 23 62  | int_vec%:CMP #b|
00000340  6c 61 6e 6b 25 20 83 20  32 35 36 0d 01 b8 14 42  |lank% . 256....B|
00000350  45 51 20 65 78 69 74 5f  73 65 74 5f 75 70 25 0d  |EQ exit_set_up%.|
00000360  01 c2 10 53 54 41 20 6f  6c 64 5f 76 65 63 25 0d  |...STA old_vec%.|
00000370  01 cc 24 4c 44 41 20 69  6e 74 5f 76 65 63 25 2b  |..$LDA int_vec%+|
00000380  31 3a 43 4d 50 20 23 62  6c 61 6e 6b 25 20 81 20  |1:CMP #blank% . |
00000390  32 35 36 0d 01 d6 14 42  45 51 20 65 78 69 74 5f  |256....BEQ exit_|
000003a0  73 65 74 5f 75 70 25 0d  01 e0 12 53 54 41 20 6f  |set_up%....STA o|
000003b0  6c 64 5f 76 65 63 25 2b  31 0d 01 ea 22 4c 44 41  |ld_vec%+1..."LDA|
000003c0  20 23 62 6c 61 6e 6b 25  20 83 20 32 35 36 3a 53  | #blank% . 256:S|
000003d0  54 41 20 69 6e 74 5f 76  65 63 25 0d 01 f4 24 4c  |TA int_vec%...$L|
000003e0  44 41 20 23 62 6c 61 6e  6b 25 20 81 20 32 35 36  |DA #blank% . 256|
000003f0  3a 53 54 41 20 69 6e 74  5f 76 65 63 25 2b 31 0d  |:STA int_vec%+1.|
00000400  01 fe 27 4c 44 41 20 23  32 34 37 3a 4c 44 58 20  |..'LDA #247:LDX |
00000410  23 37 36 3a 4c 44 59 20  23 30 3a 4a 53 52 20 6f  |#76:LDY #0:JSR o|
00000420  73 62 79 74 65 25 0d 02  08 1f 4c 44 41 20 23 32  |sbyte%....LDA #2|
00000430  34 38 3a 4c 44 58 20 23  73 65 74 5f 75 70 25 20  |48:LDX #set_up% |
00000440  83 20 32 35 36 0d 02 12  26 4c 44 59 20 23 30 3a  |. 256...&LDY #0:|
00000450  53 54 59 20 62 6c 61 6e  6b 5f 66 6c 61 67 25 3a  |STY blank_flag%:|
00000460  4a 53 52 20 6f 73 62 79  74 65 25 0d 02 1c 1f 4c  |JSR osbyte%....L|
00000470  44 41 20 23 32 34 39 3a  4c 44 58 20 23 73 65 74  |DA #249:LDX #set|
00000480  5f 75 70 25 20 81 20 32  35 36 0d 02 26 16 4c 44  |_up% . 256..&.LD|
00000490  59 20 23 30 3a 4a 53 52  20 6f 73 62 79 74 65 25  |Y #0:JSR osbyte%|
000004a0  0d 02 30 11 2e 65 78 69  74 5f 73 65 74 5f 75 70  |..0..exit_set_up|
000004b0  25 0d 02 3a 1e 4c 44 41  20 23 31 34 3a 4c 44 58  |%..:.LDA #14:LDX|
000004c0  20 23 32 3a 4a 53 52 20  6f 73 62 79 74 65 25 0d  | #2:JSR osbyte%.|
000004d0  02 44 16 4c 44 58 20 23  35 3a 4a 53 52 20 6f 73  |.D.LDX #5:JSR os|
000004e0  62 79 74 65 25 0d 02 4e  12 4a 4d 50 20 73 65 74  |byte%..N.JMP set|
000004f0  5f 74 69 6d 65 72 25 0d  02 58 0b 2e 62 6c 61 6e  |_timer%..X..blan|
00000500  6b 25 0d 02 62 0b 50 48  50 3a 50 48 41 0d 02 6c  |k%..b.PHP:PHA..l|
00000510  1b 43 4d 50 20 23 32 3a  42 45 51 20 6b 65 79 5f  |.CMP #2:BEQ key_|
00000520  70 72 65 73 73 65 64 25  0d 02 76 18 43 4d 50 20  |pressed%..v.CMP |
00000530  23 35 3a 42 45 51 20 74  69 6d 65 5f 6f 75 74 25  |#5:BEQ time_out%|
00000540  0d 02 80 0b 50 4c 41 3a  50 4c 50 0d 02 8a 12 4a  |....PLA:PLP....J|
00000550  4d 50 20 28 6f 6c 64 5f  76 65 63 25 29 0d 02 94  |MP (old_vec%)...|
00000560  11 2e 6b 65 79 5f 70 72  65 73 73 65 64 25 0d 02  |..key_pressed%..|
00000570  9e 13 54 58 41 3a 50 48  41 3a 54 59 41 3a 50 48  |..TXA:PHA:TYA:PH|
00000580  41 0d 02 a8 1d 43 50 59  20 23 6b 65 79 25 3a 42  |A....CPY #key%:B|
00000590  45 51 20 75 73 65 72 5f  62 6c 61 6e 6b 25 0d 02  |EQ user_blank%..|
000005a0  b2 12 4a 53 52 20 73 65  74 5f 74 69 6d 65 72 25  |..JSR set_timer%|
000005b0  0d 02 bc 13 4c 44 41 20  62 6c 61 6e 6b 5f 66 6c  |....LDA blank_fl|
000005c0  61 67 25 0d 02 c6 20 43  4d 50 20 23 31 32 38 3a  |ag%... CMP #128:|
000005d0  42 45 51 20 73 63 72 65  65 6e 5f 62 6c 61 6e 6b  |BEQ screen_blank|
000005e0  65 64 25 0d 02 d0 0a 2e  65 78 69 74 25 0d 02 da  |ed%.....exit%...|
000005f0  1b 50 4c 41 3a 54 41 59  3a 50 4c 41 3a 54 41 58  |.PLA:TAY:PLA:TAX|
00000600  3a 50 4c 41 3a 50 4c 50  0d 02 e4 12 4a 4d 50 20  |:PLA:PLP....JMP |
00000610  28 6f 6c 64 5f 76 65 63  25 29 0d 02 ee 10 2e 75  |(old_vec%).....u|
00000620  73 65 72 5f 62 6c 61 6e  6b 25 0d 02 f8 26 4c 44  |ser_blank%...&LD|
00000630  41 20 62 6c 61 6e 6b 5f  66 6c 61 67 25 3a 42 45  |A blank_flag%:BE|
00000640  51 20 64 6f 5f 75 73 65  72 5f 62 6c 61 6e 6b 25  |Q do_user_blank%|
00000650  0d 03 02 1f 43 4d 50 20  23 31 32 38 3a 42 45 51  |....CMP #128:BEQ|
00000660  20 64 6f 5f 75 73 65 72  5f 62 6c 61 6e 6b 25 0d  | do_user_blank%.|
00000670  03 0c 16 43 4d 50 20 23  31 32 37 3a 42 4e 45 20  |...CMP #127:BNE |
00000680  65 78 69 74 25 0d 03 16  1a 4c 44 41 20 23 30 3a  |exit%....LDA #0:|
00000690  53 54 41 20 62 6c 61 6e  6b 5f 66 6c 61 67 25 0d  |STA blank_flag%.|
000006a0  03 20 17 4a 4d 50 20 72  65 73 74 6f 72 65 5f 73  |. .JMP restore_s|
000006b0  63 72 65 65 6e 25 0d 03  2a 13 2e 64 6f 5f 75 73  |creen%..*..do_us|
000006c0  65 72 5f 62 6c 61 6e 6b  25 0d 03 34 0c 4c 44 41  |er_blank%..4.LDA|
000006d0  20 23 31 32 37 0d 03 3e  15 4a 53 52 20 62 6c 61  | #127..>.JSR bla|
000006e0  6e 6b 5f 73 63 72 65 65  6e 25 0d 03 48 0d 42 45  |nk_screen%..H.BE|
000006f0  51 20 65 78 69 74 25 0d  03 52 0f 2e 73 65 74 5f  |Q exit%..R..set_|
00000700  74 69 6d 65 72 25 0d 03  5c 0a 4c 44 41 20 23 34  |timer%..\.LDA #4|
00000710  0d 03 66 1a 4c 44 58 20  23 74 69 6d 65 5f 6c 69  |..f.LDX #time_li|
00000720  6d 69 74 25 20 83 20 32  35 36 0d 03 70 1a 4c 44  |mit% . 256..p.LD|
00000730  59 20 23 74 69 6d 65 5f  6c 69 6d 69 74 25 20 81  |Y #time_limit% .|
00000740  20 32 35 36 0d 03 7a 0f  4a 4d 50 20 6f 73 77 6f  | 256..z.JMP oswo|
00000750  72 64 25 0d 03 84 10 2e  74 69 6d 65 5f 6c 69 6d  |rd%.....time_lim|
00000760  69 74 25 0d 03 8e 18 4f  50 54 20 a4 65 71 75 62  |it%....OPT .equb|
00000770  28 77 61 69 74 5f 6c 73  62 25 29 0d 03 98 19 4f  |(wait_lsb%)....O|
00000780  50 54 20 a4 65 71 75 64  28 77 61 69 74 5f 6d 73  |PT .equd(wait_ms|
00000790  62 73 25 29 0d 03 a2 14  2e 73 63 72 65 65 6e 5f  |bs%).....screen_|
000007a0  62 6c 61 6e 6b 65 64 25  0d 03 ac 1a 4c 44 41 20  |blanked%....LDA |
000007b0  23 30 3a 53 54 41 20 62  6c 61 6e 6b 5f 66 6c 61  |#0:STA blank_fla|
000007c0  67 25 0d 03 b6 17 4a 4d  50 20 72 65 73 74 6f 72  |g%....JMP restor|
000007d0  65 5f 73 63 72 65 65 6e  25 0d 03 c0 14 2e 72 65  |e_screen%.....re|
000007e0  73 74 6f 72 65 5f 73 63  72 65 65 6e 25 0d 03 ca  |store_screen%...|
000007f0  12 4a 53 52 20 6c 69 6e  65 5f 6c 65 6e 31 25 0d  |.JSR line_len1%.|
00000800  03 d4 18 4c 44 41 20 23  31 33 35 3a 4a 53 52 20  |...LDA #135:JSR |
00000810  6f 73 62 79 74 65 25 0d  03 de 19 43 50 59 20 23  |osbyte%....CPY #|
00000820  34 3a 42 4d 49 20 6c 65  6e 67 74 68 5f 38 30 25  |4:BMI length_80%|
00000830  0d 03 e8 1b 4c 44 41 20  23 34 30 3a 42 4e 45 20  |....LDA #40:BNE |
00000840  6c 65 6e 67 74 68 5f 73  65 74 25 0d 03 f2 0f 2e  |length_set%.....|
00000850  6c 65 6e 67 74 68 5f 38  30 25 0d 03 fc 0b 4c 44  |length_80%....LD|
00000860  41 20 23 38 30 0d 04 06  10 2e 6c 65 6e 67 74 68  |A #80.....length|
00000870  5f 73 65 74 25 0d 04 10  0f 4a 53 52 20 6f 73 77  |_set%....JSR osw|
00000880  72 63 68 25 0d 04 1a 12  4a 53 52 20 6c 69 6e 65  |rch%....JSR line|
00000890  5f 6c 65 6e 32 25 0d 04  24 0d 4a 4d 50 20 65 78  |_len2%..$.JMP ex|
000008a0  69 74 25 0d 04 2e 0e 2e  74 69 6d 65 5f 6f 75 74  |it%.....time_out|
000008b0  25 0d 04 38 13 54 58 41  3a 50 48 41 3a 54 59 41  |%..8.TXA:PHA:TYA|
000008c0  3a 50 48 41 0d 04 42 0e  4a 53 52 20 62 6c 65 65  |:PHA..B.JSR blee|
000008d0  70 25 0d 04 4c 26 4c 44  41 20 62 6c 61 6e 6b 5f  |p%..L&LDA blank_|
000008e0  66 6c 61 67 25 3a 43 4d  50 20 23 31 32 37 3a 42  |flag%:CMP #127:B|
000008f0  45 51 20 65 78 69 74 25  0d 04 56 0c 4c 44 41 20  |EQ exit%..V.LDA |
00000900  23 31 32 38 0d 04 60 15  4a 53 52 20 62 6c 61 6e  |#128..`.JSR blan|
00000910  6b 5f 73 63 72 65 65 6e  25 0d 04 6a 0d 4a 4d 50  |k_screen%..j.JMP|
00000920  20 65 78 69 74 25 0d 04  74 12 2e 62 6c 61 6e 6b  | exit%..t..blank|
00000930  5f 73 63 72 65 65 6e 25  0d 04 7e 13 53 54 41 20  |_screen%..~.STA |
00000940  62 6c 61 6e 6b 5f 66 6c  61 67 25 0d 04 88 12 4a  |blank_flag%....J|
00000950  53 52 20 6c 69 6e 65 5f  6c 65 6e 31 25 0d 04 92  |SR line_len1%...|
00000960  16 4c 44 41 20 23 30 3a  4a 53 52 20 6f 73 77 72  |.LDA #0:JSR oswr|
00000970  63 68 25 0d 04 9c 12 4a  4d 50 20 6c 69 6e 65 5f  |ch%....JMP line_|
00000980  6c 65 6e 32 25 0d 04 a6  0f 2e 6c 69 6e 65 5f 6c  |len2%.....line_l|
00000990  65 6e 31 25 0d 04 b0 17  4c 44 41 20 23 32 33 3a  |en1%....LDA #23:|
000009a0  4a 53 52 20 6f 73 77 72  63 68 25 0d 04 ba 16 4c  |JSR oswrch%....L|
000009b0  44 41 20 23 30 3a 4a 53  52 20 6f 73 77 72 63 68  |DA #0:JSR oswrch|
000009c0  25 0d 04 c4 16 4c 44 41  20 23 31 3a 4a 4d 50 20  |%....LDA #1:JMP |
000009d0  6f 73 77 72 63 68 25 0d  04 ce 0f 2e 6c 69 6e 65  |oswrch%.....line|
000009e0  5f 6c 65 6e 32 25 0d 04  d8 0a 4c 44 58 20 23 36  |_len2%....LDX #6|
000009f0  0d 04 e2 0a 4c 44 41 20  23 30 0d 04 ec 14 2e 6c  |....LDA #0.....l|
00000a00  69 6e 65 5f 6c 65 6e 32  5f 6c 6f 6f 70 25 0d 04  |ine_len2_loop%..|
00000a10  f6 0f 4a 53 52 20 6f 73  77 72 63 68 25 0d 05 00  |..JSR oswrch%...|
00000a20  07 44 45 58 0d 05 0a 17  42 4e 45 20 6c 69 6e 65  |.DEX....BNE line|
00000a30  5f 6c 65 6e 32 5f 6c 6f  6f 70 25 0d 05 14 07 52  |_len2_loop%....R|
00000a40  54 53 0d 05 1e 0b 2e 62  6c 65 65 70 25 0d 05 28  |TS.....bleep%..(|
00000a50  0a 4c 44 41 20 23 37 0d  05 32 1a 4c 44 58 20 23  |.LDA #7..2.LDX #|
00000a60  62 6c 65 65 70 5f 64 61  74 61 25 20 83 20 32 35  |bleep_data% . 25|
00000a70  36 0d 05 3c 1a 4c 44 59  20 23 62 6c 65 65 70 5f  |6..<.LDY #bleep_|
00000a80  64 61 74 61 25 20 81 20  32 35 36 0d 05 46 0f 4a  |data% . 256..F.J|
00000a90  4d 50 20 6f 73 77 6f 72  64 25 0d 05 50 10 2e 62  |MP osword%..P..b|
00000aa0  6c 65 65 70 5f 64 61 74  61 25 0d 05 5a 10 4f 50  |leep_data%..Z.OP|
00000ab0  54 20 a4 65 71 75 77 28  31 29 0d 05 64 12 4f 50  |T .equw(1)..d.OP|
00000ac0  54 20 a4 65 71 75 77 28  2d 31 30 29 0d 05 6e 12  |T .equw(-10)..n.|
00000ad0  4f 50 54 20 a4 65 71 75  77 28 31 30 30 29 0d 05  |OPT .equw(100)..|
00000ae0  78 10 4f 50 54 20 a4 65  71 75 77 28 35 29 0d 05  |x.OPT .equw(5)..|
00000af0  82 1a 2e 6f 6c 64 5f 76  65 63 25 20 4f 50 54 20  |...old_vec% OPT |
00000b00  a4 65 71 75 77 28 30 29  0d 05 8c 1d 2e 62 6c 61  |.equw(0).....bla|
00000b10  6e 6b 5f 66 6c 61 67 25  20 4f 50 54 20 a4 65 71  |nk_flag% OPT .eq|
00000b20  75 62 28 30 29 0d 05 96  05 5d 0d 05 a0 05 ed 0d  |ub(0)....]......|
00000b30  05 aa 0b d6 20 63 6f 64  65 25 0d 05 b4 05 e1 0d  |.... code%......|
00000b40  05 be 05 3a 0d 05 c8 12  dd 20 a4 65 71 75 62 28  |...:..... .equb(|
00000b50  62 79 74 65 25 29 0d 05  d2 15 3f 50 25 3d 62 79  |byte%)....?P%=by|
00000b60  74 65 25 3a 50 25 3d 50  25 2b 31 0d 05 dc 09 3d  |te%:P%=P%+1....=|
00000b70  6f 70 74 25 0d 05 e6 05  3a 0d 05 f0 15 dd 20 a4  |opt%....:..... .|
00000b80  65 71 75 77 28 64 62 5f  62 79 74 65 25 29 0d 05  |equw(db_byte%)..|
00000b90  fa 16 3f 50 25 3d 64 62  5f 62 79 74 65 25 20 83  |..?P%=db_byte% .|
00000ba0  20 32 35 36 0d 06 04 17  50 25 3f 31 3d 64 62 5f  | 256....P%?1=db_|
00000bb0  62 79 74 65 25 20 81 20  32 35 36 0d 06 0e 0b 50  |byte% . 256....P|
00000bc0  25 3d 50 25 2b 32 0d 06  18 09 3d 6f 70 74 25 0d  |%=P%+2....=opt%.|
00000bd0  06 22 05 3a 0d 06 2c 12  dd 20 a4 65 71 75 64 28  |.".:..,.. .equd(|
00000be0  77 6f 72 64 25 29 0d 06  36 15 21 50 25 3d 77 6f  |word%)..6.!P%=wo|
00000bf0  72 64 25 3a 50 25 3d 50  25 2b 34 0d 06 40 09 3d  |rd%:P%=P%+4..@.=|
00000c00  6f 70 74 25 0d 06 4a 05  3a 0d 06 54 13 dd 20 f2  |opt%..J.:..T.. .|
00000c10  69 6e 73 74 72 75 63 74  69 6f 6e 73 0d 06 5e 28  |instructions..^(|
00000c20  f1 27 22 54 68 65 20 63  6f 64 65 20 68 61 73 20  |.'"The code has |
00000c30  6e 6f 77 20 62 65 65 6e  20 61 73 73 65 6d 62 6c  |now been assembl|
00000c40  65 64 2e 22 0d 06 68 98  f1 27 22 49 66 20 6e 6f  |ed."..h..'"If no|
00000c50  20 6b 65 79 20 69 73 20  70 72 65 73 73 65 64 20  | key is pressed |
00000c60  66 6f 72 20 22 3b c3 28  64 65 6c 61 79 25 29 3b  |for ";.(delay%);|
00000c70  22 20 6d 69 6e 75 74 65  73 22 27 22 74 68 65 6e  |" minutes"'"then|
00000c80  20 74 68 65 20 73 63 72  65 65 6e 20 77 69 6c 6c  | the screen will|
00000c90  20 62 6c 61 6e 6b 20 69  74 73 65 6c 66 22 27 22  | blank itself"'"|
00000ca0  61 75 74 6f 6d 61 74 69  63 61 6c 6c 79 2e 20 50  |automatically. P|
00000cb0  72 65 73 73 69 6e 67 20  61 6e 79 20 6b 65 79 20  |ressing any key |
00000cc0  77 69 6c 6c 22 27 22 72  65 73 74 6f 72 65 20 74  |will"'"restore t|
00000cd0  68 65 20 64 69 73 70 6c  61 79 2e 22 0d 06 72 85  |he display."..r.|
00000ce0  f1 27 22 54 68 65 20 73  63 72 65 65 6e 20 63 61  |.'"The screen ca|
00000cf0  6e 20 61 6c 73 6f 20 62  65 20 62 6c 61 6e 6b 65  |n also be blanke|
00000d00  64 20 62 79 22 27 22 70  72 65 73 73 69 6e 67 20  |d by"'"pressing |
00000d10  43 54 52 4c 20 40 2e 20  49 66 20 74 68 69 73 20  |CTRL @. If this |
00000d20  69 73 20 64 6f 6e 65 2c  20 43 54 52 4c 22 27 22  |is done, CTRL"'"|
00000d30  40 20 6d 75 73 74 20 62  65 20 70 72 65 73 73 65  |@ must be presse|
00000d40  64 20 61 67 61 69 6e 20  74 6f 20 72 65 73 74 6f  |d again to resto|
00000d50  72 65 20 74 68 65 22 27  22 73 63 72 65 65 6e 2e  |re the"'"screen.|
00000d60  22 0d 06 7c 43 f1 27 22  55 73 65 20 2a 53 41 56  |"..|C.'"Use *SAV|
00000d70  45 20 6e 61 6d 65 20 22  3b c3 7e 28 63 6f 64 65  |E name ";.~(code|
00000d80  25 29 3b 22 20 22 3b c3  7e 28 50 25 29 3b 22 20  |%);" ";.~(P%);" |
00000d90  74 6f 20 73 61 76 65 20  74 68 65 22 27 22 63 6f  |to save the"'"co|
00000da0  64 65 2e 22 0d 06 86 05  e1 0d ff                 |de.".......|
00000dab
Blanker.m0
Blanker.m1
Blanker.m2
Blanker.m4
Blanker.m5