P/LOADER

Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_30.ADF » P/LOADER

P/LOADER

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 ADFS disks » Electron_User_Group » EUG_30.ADF
Filename:	P/LOADER
Read OK:	✔
File size:	05CE bytes
Load address:	FFFF0E00
Exec address:	FFFF802B

Duplicates

There are 2 duplicate copies of this file in the archive:

AEW website » eug » eug_3_5_discs_Eug-29_A-EUG29.adf » U/SNAPLD
AEW website » eug » eug_5_25_discs_Eug-29_D-EUG29.dsd » U.SNAPLD
Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_30.ADF » P/LOADER

File contents

   10REM Simple loader program
   20REM (C)1996 SPROW
   30MODE4:PRINT"Searching"
   40DIMwriteable% 128
   50IFINKEY(-256)=253 THENPROCmaster:END
   60IFINKEY(-256)=255 THENPROCbbcorelk:END
   70IFINKEY(-256)=1 THENPROCbbcorelk:END
   80:
   90DEFPROCmaster
  100FORS%=7TO4 STEP-1
  110IFFNoccupied(S%)=FALSE THENOSCLI"SRLOAD SNAPIT 8000 "+STR$(S%):OSCLI"INSERT "+STR$(S%):PRINT:PRINT"Press CTRL-BREAK to initialise":ENDPROC
  120NEXT
  130PRINT:PRINT"No free sideways ram banks":ENDPROC
  140:
  150DEFPROCbbcorelk
  160FORS%=15TO0 STEP-1
  170IFFNanyswram(S%)=1 ANDFNoccupied(S%)=FALSE THENOSCLI"LOAD R.SNAPIT 8000":PRINT:PRINT"Press BREAK to intialise":ENDPROC
  180NEXT
  190PRINT:PRINT"No free sideways ram banks":ENDPROC
  200:
  210DEFFNanyswram(socket)
  220FORX=0TO2STEP2
  230P%=writeable%
  240IFINKEY(-256)=1 THENGOTO420
  250IFINKEY(-256)=255 THENGOTO270
  260:
  270[OPTX:SEI:LDA&F4:PHA:LDA#socket:STA&F4:STA&FE30:CLI:\Set ROM reg to socket#
  280LDA&8000:PHA:CLC:ADC#1:STAcopy
  290.writeto
  300STA&8000:LDA&8000:CMPcopy
  310BEQtrue
  320.false
  330PLA:PLA:STA&F4:STA&FE30:LDA#0:RTS
  340.true
  350PLA:STA&8000:PLA:STA&F4:STA&FE30:LDA#1:RTS
  360.copy
  370EQUB0
  380]
  390NEXT
  400=USRwriteable% AND&FF
  410:
  420[OPTX:SEI:LDA&F4:PHA:LDA#12:STA&FE05:LDA#socket:STA&F4:STA&FE05:CLI:\Dummy move takes out BASIC then set ROM reg to socket#
  430LDA&8000:PHA:CLC:ADC#1:STAcopy
  440.writeto
  450STA&8000:LDA&8000:CMPcopy
  460BEQtrue
  470.false
  480PLA:PLA:STA&F4:STA&FE05:LDA#0:RTS
  490.true
  500PLA:STA&8000:PLA:STA&F4:STA&FE05:LDA#1:RTS
  510.copy
  520EQUB0
  530]
  540NEXT
  550=USRwriteable% AND&FF
  560:
  570DEFFNoccupied(socket)
  580A%=170:X%=0:Y%=255:R%=USR&FFF4:REM Read pointer to start of ROM info table
  590X%=(R% AND &FF00)DIV&100
  600Y%=(R% AND &FF0000)DIV&10000
  610=?((256*Y%)+X%+socket)


� Simple loader program
� (C)1996 SPROW
�4:�"Searching"
(�writeable% 128
2�(-256)=253 ��master:�
<�(-256)=255 ��bbcorelk:�
F�(-256)=1 ��bbcorelk:�
P:
Z��master
d�S%=7�4 �-1
ni�occupied(S%)=� ��"SRLOAD SNAPIT 8000 "+�(S%):�"INSERT "+�(S%):�:�"Press CTRL-BREAK to initialise":�
x�
�%�:�"No free sideways ram banks":�
�:
���bbcorelk
��S%=15�0 �-1
�\�anyswram(S%)=1 ��occupied(S%)=� ��"LOAD R.SNAPIT 8000":�:�"Press BREAK to intialise":�
��
�%�:�"No free sideways ram banks":�
�:
�ݤanyswram(socket)
��X=0�2�2
�P%=writeable%
��(-256)=1 ��tdA
��(-256)=255 ��TNA
:
O[OPTX:SEI:LDA&F4:PHA:LDA#socket:STA&F4:STA&FE30:CLI:\Set ROM reg to socket#
"LDA&8000:PHA:CLC:ADC#1:STAcopy
".writeto
,STA&8000:LDA&8000:CMPcopy
6BEQtrue
@
.false
J%PLA:PLA:STA&F4:STA&FE30:LDA#0:RTS
T	.true
^.PLA:STA&8000:PLA:STA&F4:STA&FE30:LDA#1:RTS
h	.copy
r	EQUB0
|]
��
�=�writeable% �&FF
�:
�[OPTX:SEI:LDA&F4:PHA:LDA#12:STA&FE05:LDA#socket:STA&F4:STA&FE05:CLI:\Dummy move takes out BASIC then set ROM reg to socket#
�"LDA&8000:PHA:CLC:ADC#1:STAcopy
�.writeto
�STA&8000:LDA&8000:CMPcopy
�BEQtrue
�
.false
�%PLA:PLA:STA&F4:STA&FE05:LDA#0:RTS
�	.true
�.PLA:STA&8000:PLA:STA&F4:STA&FE05:LDA#1:RTS
�	.copy
	EQUB0
]
�
&=�writeable% �&FF
0:
:ݤoccupied(socket)
DJA%=170:X%=0:Y%=255:R%=�&FFF4:� Read pointer to start of ROM info table
NX%=(R% � &FF00)�&100
XY%=(R% � &FF0000)�&10000
b=?((256*Y%)+X%+socket)
�

00000000  0d 00 0a 1b f4 20 53 69  6d 70 6c 65 20 6c 6f 61  |..... Simple loa|
00000010  64 65 72 20 70 72 6f 67  72 61 6d 0d 00 14 13 f4  |der program.....|
00000020  20 28 43 29 31 39 39 36  20 53 50 52 4f 57 0d 00  | (C)1996 SPROW..|
00000030  1e 13 eb 34 3a f1 22 53  65 61 72 63 68 69 6e 67  |...4:."Searching|
00000040  22 0d 00 28 13 de 77 72  69 74 65 61 62 6c 65 25  |"..(..writeable%|
00000050  20 31 32 38 0d 00 32 1b  e7 a6 28 2d 32 35 36 29  | 128..2...(-256)|
00000060  3d 32 35 33 20 8c f2 6d  61 73 74 65 72 3a e0 0d  |=253 ..master:..|
00000070  00 3c 1d e7 a6 28 2d 32  35 36 29 3d 32 35 35 20  |.<...(-256)=255 |
00000080  8c f2 62 62 63 6f 72 65  6c 6b 3a e0 0d 00 46 1b  |..bbcorelk:...F.|
00000090  e7 a6 28 2d 32 35 36 29  3d 31 20 8c f2 62 62 63  |..(-256)=1 ..bbc|
000000a0  6f 72 65 6c 6b 3a e0 0d  00 50 05 3a 0d 00 5a 0c  |orelk:...P.:..Z.|
000000b0  dd f2 6d 61 73 74 65 72  0d 00 64 0f e3 53 25 3d  |..master..d..S%=|
000000c0  37 b8 34 20 88 2d 31 0d  00 6e 69 e7 a4 6f 63 63  |7.4 .-1..ni..occ|
000000d0  75 70 69 65 64 28 53 25  29 3d a3 20 8c ff 22 53  |upied(S%)=. .."S|
000000e0  52 4c 4f 41 44 20 53 4e  41 50 49 54 20 38 30 30  |RLOAD SNAPIT 800|
000000f0  30 20 22 2b c3 28 53 25  29 3a ff 22 49 4e 53 45  |0 "+.(S%):."INSE|
00000100  52 54 20 22 2b c3 28 53  25 29 3a f1 3a f1 22 50  |RT "+.(S%):.:."P|
00000110  72 65 73 73 20 43 54 52  4c 2d 42 52 45 41 4b 20  |ress CTRL-BREAK |
00000120  74 6f 20 69 6e 69 74 69  61 6c 69 73 65 22 3a e1  |to initialise":.|
00000130  0d 00 78 05 ed 0d 00 82  25 f1 3a f1 22 4e 6f 20  |..x.....%.:."No |
00000140  66 72 65 65 20 73 69 64  65 77 61 79 73 20 72 61  |free sideways ra|
00000150  6d 20 62 61 6e 6b 73 22  3a e1 0d 00 8c 05 3a 0d  |m banks":.....:.|
00000160  00 96 0e dd f2 62 62 63  6f 72 65 6c 6b 0d 00 a0  |.....bbcorelk...|
00000170  10 e3 53 25 3d 31 35 b8  30 20 88 2d 31 0d 00 aa  |..S%=15.0 .-1...|
00000180  5c e7 a4 61 6e 79 73 77  72 61 6d 28 53 25 29 3d  |\..anyswram(S%)=|
00000190  31 20 80 a4 6f 63 63 75  70 69 65 64 28 53 25 29  |1 ..occupied(S%)|
000001a0  3d a3 20 8c ff 22 4c 4f  41 44 20 52 2e 53 4e 41  |=. .."LOAD R.SNA|
000001b0  50 49 54 20 38 30 30 30  22 3a f1 3a f1 22 50 72  |PIT 8000":.:."Pr|
000001c0  65 73 73 20 42 52 45 41  4b 20 74 6f 20 69 6e 74  |ess BREAK to int|
000001d0  69 61 6c 69 73 65 22 3a  e1 0d 00 b4 05 ed 0d 00  |ialise":........|
000001e0  be 25 f1 3a f1 22 4e 6f  20 66 72 65 65 20 73 69  |.%.:."No free si|
000001f0  64 65 77 61 79 73 20 72  61 6d 20 62 61 6e 6b 73  |deways ram banks|
00000200  22 3a e1 0d 00 c8 05 3a  0d 00 d2 16 dd a4 61 6e  |":.....:......an|
00000210  79 73 77 72 61 6d 28 73  6f 63 6b 65 74 29 0d 00  |yswram(socket)..|
00000220  dc 0c e3 58 3d 30 b8 32  88 32 0d 00 e6 11 50 25  |...X=0.2.2....P%|
00000230  3d 77 72 69 74 65 61 62  6c 65 25 0d 00 f0 15 e7  |=writeable%.....|
00000240  a6 28 2d 32 35 36 29 3d  31 20 8c e5 8d 74 64 41  |.(-256)=1 ...tdA|
00000250  0d 00 fa 17 e7 a6 28 2d  32 35 36 29 3d 32 35 35  |......(-256)=255|
00000260  20 8c e5 8d 54 4e 41 0d  01 04 05 3a 0d 01 0e 4f  | ...TNA....:...O|
00000270  5b 4f 50 54 58 3a 53 45  49 3a 4c 44 41 26 46 34  |[OPTX:SEI:LDA&F4|
00000280  3a 50 48 41 3a 4c 44 41  23 73 6f 63 6b 65 74 3a  |:PHA:LDA#socket:|
00000290  53 54 41 26 46 34 3a 53  54 41 26 46 45 33 30 3a  |STA&F4:STA&FE30:|
000002a0  43 4c 49 3a 5c 53 65 74  20 52 4f 4d 20 72 65 67  |CLI:\Set ROM reg|
000002b0  20 74 6f 20 73 6f 63 6b  65 74 23 0d 01 18 22 4c  | to socket#..."L|
000002c0  44 41 26 38 30 30 30 3a  50 48 41 3a 43 4c 43 3a  |DA&8000:PHA:CLC:|
000002d0  41 44 43 23 31 3a 53 54  41 63 6f 70 79 0d 01 22  |ADC#1:STAcopy.."|
000002e0  0c 2e 77 72 69 74 65 74  6f 0d 01 2c 1d 53 54 41  |..writeto..,.STA|
000002f0  26 38 30 30 30 3a 4c 44  41 26 38 30 30 30 3a 43  |&8000:LDA&8000:C|
00000300  4d 50 63 6f 70 79 0d 01  36 0b 42 45 51 74 72 75  |MPcopy..6.BEQtru|
00000310  65 0d 01 40 0a 2e 66 61  6c 73 65 0d 01 4a 25 50  |e..@..false..J%P|
00000320  4c 41 3a 50 4c 41 3a 53  54 41 26 46 34 3a 53 54  |LA:PLA:STA&F4:ST|
00000330  41 26 46 45 33 30 3a 4c  44 41 23 30 3a 52 54 53  |A&FE30:LDA#0:RTS|
00000340  0d 01 54 09 2e 74 72 75  65 0d 01 5e 2e 50 4c 41  |..T..true..^.PLA|
00000350  3a 53 54 41 26 38 30 30  30 3a 50 4c 41 3a 53 54  |:STA&8000:PLA:ST|
00000360  41 26 46 34 3a 53 54 41  26 46 45 33 30 3a 4c 44  |A&F4:STA&FE30:LD|
00000370  41 23 31 3a 52 54 53 0d  01 68 09 2e 63 6f 70 79  |A#1:RTS..h..copy|
00000380  0d 01 72 09 45 51 55 42  30 0d 01 7c 05 5d 0d 01  |..r.EQUB0..|.]..|
00000390  86 05 ed 0d 01 90 15 3d  ba 77 72 69 74 65 61 62  |.......=.writeab|
000003a0  6c 65 25 20 80 26 46 46  0d 01 9a 05 3a 0d 01 a4  |le% .&FF....:...|
000003b0  7f 5b 4f 50 54 58 3a 53  45 49 3a 4c 44 41 26 46  |.[OPTX:SEI:LDA&F|
000003c0  34 3a 50 48 41 3a 4c 44  41 23 31 32 3a 53 54 41  |4:PHA:LDA#12:STA|
000003d0  26 46 45 30 35 3a 4c 44  41 23 73 6f 63 6b 65 74  |&FE05:LDA#socket|
000003e0  3a 53 54 41 26 46 34 3a  53 54 41 26 46 45 30 35  |:STA&F4:STA&FE05|
000003f0  3a 43 4c 49 3a 5c 44 75  6d 6d 79 20 6d 6f 76 65  |:CLI:\Dummy move|
00000400  20 74 61 6b 65 73 20 6f  75 74 20 42 41 53 49 43  | takes out BASIC|
00000410  20 74 68 65 6e 20 73 65  74 20 52 4f 4d 20 72 65  | then set ROM re|
00000420  67 20 74 6f 20 73 6f 63  6b 65 74 23 0d 01 ae 22  |g to socket#..."|
00000430  4c 44 41 26 38 30 30 30  3a 50 48 41 3a 43 4c 43  |LDA&8000:PHA:CLC|
00000440  3a 41 44 43 23 31 3a 53  54 41 63 6f 70 79 0d 01  |:ADC#1:STAcopy..|
00000450  b8 0c 2e 77 72 69 74 65  74 6f 0d 01 c2 1d 53 54  |...writeto....ST|
00000460  41 26 38 30 30 30 3a 4c  44 41 26 38 30 30 30 3a  |A&8000:LDA&8000:|
00000470  43 4d 50 63 6f 70 79 0d  01 cc 0b 42 45 51 74 72  |CMPcopy....BEQtr|
00000480  75 65 0d 01 d6 0a 2e 66  61 6c 73 65 0d 01 e0 25  |ue.....false...%|
00000490  50 4c 41 3a 50 4c 41 3a  53 54 41 26 46 34 3a 53  |PLA:PLA:STA&F4:S|
000004a0  54 41 26 46 45 30 35 3a  4c 44 41 23 30 3a 52 54  |TA&FE05:LDA#0:RT|
000004b0  53 0d 01 ea 09 2e 74 72  75 65 0d 01 f4 2e 50 4c  |S.....true....PL|
000004c0  41 3a 53 54 41 26 38 30  30 30 3a 50 4c 41 3a 53  |A:STA&8000:PLA:S|
000004d0  54 41 26 46 34 3a 53 54  41 26 46 45 30 35 3a 4c  |TA&F4:STA&FE05:L|
000004e0  44 41 23 31 3a 52 54 53  0d 01 fe 09 2e 63 6f 70  |DA#1:RTS.....cop|
000004f0  79 0d 02 08 09 45 51 55  42 30 0d 02 12 05 5d 0d  |y....EQUB0....].|
00000500  02 1c 05 ed 0d 02 26 15  3d ba 77 72 69 74 65 61  |......&.=.writea|
00000510  62 6c 65 25 20 80 26 46  46 0d 02 30 05 3a 0d 02  |ble% .&FF..0.:..|
00000520  3a 16 dd a4 6f 63 63 75  70 69 65 64 28 73 6f 63  |:...occupied(soc|
00000530  6b 65 74 29 0d 02 44 4a  41 25 3d 31 37 30 3a 58  |ket)..DJA%=170:X|
00000540  25 3d 30 3a 59 25 3d 32  35 35 3a 52 25 3d ba 26  |%=0:Y%=255:R%=.&|
00000550  46 46 46 34 3a f4 20 52  65 61 64 20 70 6f 69 6e  |FFF4:. Read poin|
00000560  74 65 72 20 74 6f 20 73  74 61 72 74 20 6f 66 20  |ter to start of |
00000570  52 4f 4d 20 69 6e 66 6f  20 74 61 62 6c 65 0d 02  |ROM info table..|
00000580  4e 18 58 25 3d 28 52 25  20 80 20 26 46 46 30 30  |N.X%=(R% . &FF00|
00000590  29 81 26 31 30 30 0d 02  58 1c 59 25 3d 28 52 25  |).&100..X.Y%=(R%|
000005a0  20 80 20 26 46 46 30 30  30 30 29 81 26 31 30 30  | . &FF0000).&100|
000005b0  30 30 0d 02 62 1a 3d 3f  28 28 32 35 36 2a 59 25  |00..b.=?((256*Y%|
000005c0  29 2b 58 25 2b 73 6f 63  6b 65 74 29 0d ff        |)+X%+socket)..|
000005ce

P/LOADER.m0

P/LOADER.m1

P/LOADER.m2

P/LOADER.m4

P/LOADER.m5

Our privacy policy is here.
Last updated: 28 Jul 2024, 23:31 UTC
Website designed by .