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P/+27Kas1
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_27.ADF |
| Filename: | P/+27Kas1 |
| Read OK: | ✔ |
| File size: | 0FED bytes |
| Load address: | 50204556 |
| Exec address: | 37322B2E |
File contents
�..>......*.......*.......*.......*.......*.......*.......*.......*.......*.<
6 Bollinbrook road,
MACCLESFIELD,
Cheshire.
SK10 3DJ.
27k assembler
=============
Having kept promising this utility to you for some time I have now had
chance to finish and check it for you.The results appear on this issue
disk called 27KASM,along with 2 test program TEST and TEST2.
Even on a casette machine in MODE seven there are only 27k of free
memory for programs,or 28k if you're using a shadow MODE such as
available on the Master 128.
When writing large assembler programs you could quite easily fill
this 27k with source code,which means when it comes to assembly BASIC
gives the insulting "No room" message as there is no free space to keep
the line references on the HEAP.
The normal way around this is to assemble your program in parts but
this has the disadvantage of your loosing the variables between.
Another possible route is open to those with sideways RAM.Using
BASIC2's offset assembly and pointing the code into &8000.This is
fine,except when you come to saving as using *SAVE will page in the
DFS.Also,it wont work on a Master.
This is where my program comes into its own.It will work on any
unexpanded 8 bit Acorn (but is NOT 2nd processor compatible).ie.a
Master,Elk,BBC B etc... as long as it has at least BASIC version 2.
You can tell if you have BASIC2 by turning on,typing *BASIC then
REPORT.Dates of 1982 or greater are fine.
There are some modifications you'll need to make to you code,this is
best illustrated by a frivilous example, using the generic header I use
for all my assembler listings:
10REM Pointless program
20REM (C)1996 Joe Bloggs
30DIM code% 256
40INPUT"Assemble at "loc$
50loc%=EVAL(loc$)
60REM Define os variables for later
70oswc=&FFEE:oswd=&FFF1:osfd=&FFCE
80osfd=&FFCE:ospb=&FFD4:osby=&FFF4
90FORX=4 TO 7 STEP3
100O%=code%:P%=loc%
110[OPTX
120NOP
130RTS
140]
150NEXT
160REM Save mcode to disk as usual
170OSCLI"SAVE OUTPUT "+STR$~(asm%)+"
"+STR$~(O%)+" "+STR$~(loc%)+"
"+STR$~(loc%)
Requires modifying in the following
ways: *RUN the redirector,27KASM
SET O%=&A00
DO VDU255 at top and bottom
inside the FOR...NEXT loop
Although not essential,you don't need to DIM any memory for it now,and
the *SAVE command at the end is not needed anymore,which would make the
above become:
10REM Pointless program
20REM (C)1996 Joe Bloggs
30
40INPUT"Assemble at "loc$
50loc%=EVAL(loc$)
60REM Define os variables for later
70oswc=&FFEE:oswd=&FFF1:osfd=&FFCE
80osfd=&FFCE:ospb=&FFD4:osby=&FFF4
85*RUN 27KASM
90FORX=4 TO 7 STEP3
100O%=&A00:P%=loc%
105VDU255
110[OPTX
120NOP
130RTS
140]
145VDU255
150NEXT
160
170
Also enclosed on this disk are 2 further test programs,which don't do
anything special,but illustrate some other features.As vectors are
repointed the 27KASM program shouldn't be *RUN twice without pressing
BREAK in between.The program will work with both the TAPE,DFS,and ADFS.
Note that it uses page &A00 (cassette and RS423 receive on the BBC)
as a buffer for BASIC to assemble to.The program itself occupies page
&C00 (character redef buffer on BBC or Econet workspace on the Master) so
don't redefine any characters.If these locations pose a problem to yuo
send `2.50 with a note saying where your preffered buffer/program areas
are and I'll send you a customised version back on disk.
This has been tested with BASIC2 and BASIC4.It wont work with BASIC1
as this has no offset assembly option.
Let me know how you get on,and I'll look forward to seeing your 27k
assembler programs in future EUG's (actually they wont be THAT long as
I've found that roughly for every 7.25 bytes of BASIC source you write
only 1 byte of mcode is generated,so 3.75k of mcode is more realistic!).
R.P.Sprowson
00000000 81 2e 2e 3e 2e 2e 2e 2e 2e 2e 2a 2e 2e 2e 2e 2e |...>......*.....| 00000010 2e 2e 2a 2e 2e 2e 2e 2e 2e 2e 2a 2e 2e 2e 2e 2e |..*.......*.....| * 00000040 2e 2e 2a 2e 2e 2e 2e 2e 2e 2e 2a 2e 3c 0d 20 20 |..*.......*.<. | 00000050 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000060 20 36 20 42 6f 6c 6c 69 6e 62 72 6f 6f 6b 20 72 | 6 Bollinbrook r| 00000070 6f 61 64 2c 20 0d 20 20 20 20 20 20 20 20 20 20 |oad, . | 00000080 20 20 20 20 20 20 20 20 20 20 4d 41 43 43 4c 45 | MACCLE| 00000090 53 46 49 45 4c 44 2c 20 20 0d 20 20 20 20 20 20 |SFIELD, . | 000000a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 43 | C| 000000b0 68 65 73 68 69 72 65 2e 20 20 0d 20 20 20 20 20 |heshire. . | 000000c0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 000000d0 20 53 4b 31 30 20 33 44 4a 2e 20 20 0d 20 20 0d | SK10 3DJ. . .| 000000e0 32 37 6b 20 61 73 73 65 6d 62 6c 65 72 20 20 0d |27k assembler .| 000000f0 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 3d 20 20 0d |============= .| 00000100 20 20 0d 20 20 20 48 61 76 69 6e 67 20 6b 65 70 | . Having kep| 00000110 74 20 70 72 6f 6d 69 73 69 6e 67 20 74 68 69 73 |t promising this| 00000120 20 75 74 69 6c 69 74 79 20 20 74 6f 20 79 6f 75 | utility to you| 00000130 20 66 6f 72 20 73 6f 6d 65 20 74 69 6d 65 20 49 | for some time I| 00000140 20 68 61 76 65 20 6e 6f 77 20 68 61 64 20 0d 63 | have now had .c| 00000150 68 61 6e 63 65 20 74 6f 20 66 69 6e 69 73 68 20 |hance to finish | 00000160 61 6e 64 20 63 68 65 63 6b 20 69 74 20 66 6f 72 |and check it for| 00000170 20 20 79 6f 75 2e 54 68 65 20 72 65 73 75 6c 74 | you.The result| 00000180 73 20 61 70 70 65 61 72 20 6f 6e 20 74 68 69 73 |s appear on this| 00000190 20 69 73 73 75 65 20 0d 64 69 73 6b 20 63 61 6c | issue .disk cal| 000001a0 6c 65 64 20 32 37 4b 41 53 4d 2c 61 6c 6f 6e 67 |led 27KASM,along| 000001b0 20 77 69 74 68 20 32 20 74 65 73 74 20 20 70 72 | with 2 test pr| 000001c0 6f 67 72 61 6d 20 54 45 53 54 20 61 6e 64 20 54 |ogram TEST and T| 000001d0 45 53 54 32 2e 20 0d 0d 20 20 20 45 76 65 6e 20 |EST2. .. Even | 000001e0 6f 6e 20 61 20 63 61 73 65 74 74 65 20 6d 61 63 |on a casette mac| 000001f0 68 69 6e 65 20 69 6e 20 4d 4f 44 45 20 20 73 65 |hine in MODE se| 00000200 76 65 6e 20 74 68 65 72 65 20 61 72 65 20 6f 6e |ven there are on| 00000210 6c 79 20 32 37 6b 20 6f 66 20 66 72 65 65 20 0d |ly 27k of free .| 00000220 6d 65 6d 6f 72 79 20 66 6f 72 20 70 72 6f 67 72 |memory for progr| 00000230 61 6d 73 2c 6f 72 20 32 38 6b 20 69 66 20 79 6f |ams,or 28k if yo| 00000240 75 27 72 65 20 20 75 73 69 6e 67 20 61 20 73 68 |u're using a sh| 00000250 61 64 6f 77 20 4d 4f 44 45 20 73 75 63 68 20 61 |adow MODE such a| 00000260 73 0d 61 76 61 69 6c 61 62 6c 65 20 20 6f 6e 20 |s.available on | 00000270 74 68 65 20 4d 61 73 74 65 72 20 31 32 38 2e 20 |the Master 128. | 00000280 0d 0d 20 20 20 57 68 65 6e 20 77 72 69 74 69 6e |.. When writin| 00000290 67 20 6c 61 72 67 65 20 61 73 73 65 6d 62 6c 65 |g large assemble| 000002a0 72 20 20 70 72 6f 67 72 61 6d 73 20 79 6f 75 20 |r programs you | 000002b0 63 6f 75 6c 64 20 71 75 69 74 65 20 65 61 73 69 |could quite easi| 000002c0 6c 79 20 66 69 6c 6c 20 0d 74 68 69 73 20 32 37 |ly fill .this 27| 000002d0 6b 20 77 69 74 68 20 73 6f 75 72 63 65 20 63 6f |k with source co| 000002e0 64 65 2c 77 68 69 63 68 20 6d 65 61 6e 73 20 20 |de,which means | 000002f0 77 68 65 6e 20 69 74 20 63 6f 6d 65 73 20 74 6f |when it comes to| 00000300 20 61 73 73 65 6d 62 6c 79 20 42 41 53 49 43 0d | assembly BASIC.| 00000310 67 69 76 65 73 20 20 74 68 65 20 69 6e 73 75 6c |gives the insul| 00000320 74 69 6e 67 20 22 4e 6f 20 72 6f 6f 6d 22 20 6d |ting "No room" m| 00000330 65 73 73 61 67 65 20 61 73 20 20 74 68 65 72 65 |essage as there| 00000340 20 69 73 20 6e 6f 20 66 72 65 65 20 73 70 61 63 | is no free spac| 00000350 65 20 74 6f 20 6b 65 65 70 0d 74 68 65 20 20 6c |e to keep.the l| 00000360 69 6e 65 20 72 65 66 65 72 65 6e 63 65 73 20 6f |ine references o| 00000370 6e 20 74 68 65 20 48 45 41 50 2e 20 0d 0d 20 20 |n the HEAP. .. | 00000380 20 54 68 65 20 6e 6f 72 6d 61 6c 20 77 61 79 20 | The normal way | 00000390 61 72 6f 75 6e 64 20 74 68 69 73 20 69 73 20 74 |around this is t| 000003a0 6f 20 20 61 73 73 65 6d 62 6c 65 20 79 6f 75 72 |o assemble your| 000003b0 20 70 72 6f 67 72 61 6d 20 69 6e 20 70 61 72 74 | program in part| 000003c0 73 20 62 75 74 20 0d 74 68 69 73 20 68 61 73 20 |s but .this has | 000003d0 74 68 65 20 64 69 73 61 64 76 61 6e 74 61 67 65 |the disadvantage| 000003e0 20 6f 66 20 79 6f 75 72 20 20 6c 6f 6f 73 69 6e | of your loosin| 000003f0 67 20 74 68 65 20 76 61 72 69 61 62 6c 65 73 20 |g the variables | 00000400 62 65 74 77 65 65 6e 2e 20 0d 0d 20 20 20 41 6e |between. .. An| 00000410 6f 74 68 65 72 20 70 6f 73 73 69 62 6c 65 20 72 |other possible r| 00000420 6f 75 74 65 20 69 73 20 6f 70 65 6e 20 74 6f 20 |oute is open to | 00000430 20 74 68 6f 73 65 20 77 69 74 68 20 73 69 64 65 | those with side| 00000440 77 61 79 73 20 52 41 4d 2e 55 73 69 6e 67 0d 42 |ways RAM.Using.B| 00000450 41 53 49 43 32 27 73 20 20 6f 66 66 73 65 74 20 |ASIC2's offset | 00000460 61 73 73 65 6d 62 6c 79 20 61 6e 64 20 70 6f 69 |assembly and poi| 00000470 6e 74 69 6e 67 20 74 68 65 20 63 6f 64 65 20 20 |nting the code | 00000480 69 6e 74 6f 20 26 38 30 30 30 2e 54 68 69 73 20 |into &8000.This | 00000490 69 73 0d 66 69 6e 65 2c 65 78 63 65 70 74 20 77 |is.fine,except w| 000004a0 68 65 6e 20 20 79 6f 75 20 63 6f 6d 65 20 74 6f |hen you come to| 000004b0 20 73 61 76 69 6e 67 20 61 73 20 75 73 69 6e 67 | saving as using| 000004c0 20 2a 53 41 56 45 20 77 69 6c 6c 20 20 70 61 67 | *SAVE will pag| 000004d0 65 20 69 6e 20 74 68 65 0d 44 46 53 2e 41 6c 73 |e in the.DFS.Als| 000004e0 6f 2c 69 74 20 77 6f 6e 74 20 77 6f 72 6b 20 6f |o,it wont work o| 000004f0 6e 20 61 20 20 4d 61 73 74 65 72 2e 20 0d 0d 20 |n a Master. .. | 00000500 20 20 54 68 69 73 20 69 73 20 77 68 65 72 65 20 | This is where | 00000510 6d 79 20 70 72 6f 67 72 61 6d 20 63 6f 6d 65 73 |my program comes| 00000520 20 69 6e 74 6f 20 20 69 74 73 20 6f 77 6e 2e 49 | into its own.I| 00000530 74 20 77 69 6c 6c 20 77 6f 72 6b 20 6f 6e 20 61 |t will work on a| 00000540 6e 79 0d 75 6e 65 78 70 61 6e 64 65 64 20 20 38 |ny.unexpanded 8| 00000550 20 62 69 74 20 41 63 6f 72 6e 20 28 62 75 74 20 | bit Acorn (but | 00000560 69 73 20 4e 4f 54 20 32 6e 64 20 70 72 6f 63 65 |is NOT 2nd proce| 00000570 73 73 6f 72 20 20 63 6f 6d 70 61 74 69 62 6c 65 |ssor compatible| 00000580 29 2e 69 65 2e 61 0d 4d 61 73 74 65 72 2c 45 6c |).ie.a.Master,El| 00000590 6b 2c 42 42 43 20 42 20 20 65 74 63 2e 2e 2e 20 |k,BBC B etc... | 000005a0 61 73 20 6c 6f 6e 67 20 61 73 20 69 74 20 68 61 |as long as it ha| 000005b0 73 20 61 74 20 6c 65 61 73 74 20 20 42 41 53 49 |s at least BASI| 000005c0 43 20 76 65 72 73 69 6f 6e 20 32 2e 20 0d 0d 20 |C version 2. .. | 000005d0 20 20 59 6f 75 20 63 61 6e 20 74 65 6c 6c 20 69 | You can tell i| 000005e0 66 20 79 6f 75 20 68 61 76 65 20 42 41 53 49 43 |f you have BASIC| 000005f0 32 20 62 79 20 20 74 75 72 6e 69 6e 67 20 6f 6e |2 by turning on| 00000600 2c 74 79 70 69 6e 67 20 2a 42 41 53 49 43 20 74 |,typing *BASIC t| 00000610 68 65 6e 20 0d 52 45 50 4f 52 54 2e 44 61 74 65 |hen .REPORT.Date| 00000620 73 20 6f 66 20 31 39 38 32 20 6f 72 20 67 72 65 |s of 1982 or gre| 00000630 61 74 65 72 20 61 72 65 20 20 66 69 6e 65 2e 20 |ater are fine. | 00000640 0d 0d 20 20 20 54 68 65 72 65 20 61 72 65 20 73 |.. There are s| 00000650 6f 6d 65 20 6d 6f 64 69 66 69 63 61 74 69 6f 6e |ome modification| 00000660 73 20 79 6f 75 27 6c 6c 20 20 6e 65 65 64 20 74 |s you'll need t| 00000670 6f 20 6d 61 6b 65 20 74 6f 20 79 6f 75 20 63 6f |o make to you co| 00000680 64 65 2c 74 68 69 73 20 69 73 0d 62 65 73 74 20 |de,this is.best | 00000690 20 69 6c 6c 75 73 74 72 61 74 65 64 20 62 79 20 | illustrated by | 000006a0 61 20 66 72 69 76 69 6c 6f 75 73 20 65 78 61 6d |a frivilous exam| 000006b0 70 6c 65 2c 20 20 75 73 69 6e 67 20 74 68 65 20 |ple, using the | 000006c0 67 65 6e 65 72 69 63 20 68 65 61 64 65 72 20 49 |generic header I| 000006d0 20 75 73 65 0d 66 6f 72 20 61 6c 6c 20 20 6d 79 | use.for all my| 000006e0 20 61 73 73 65 6d 62 6c 65 72 20 6c 69 73 74 69 | assembler listi| 000006f0 6e 67 73 3a 20 0d 20 0d 31 30 52 45 4d 20 50 6f |ngs: . .10REM Po| 00000700 69 6e 74 6c 65 73 73 20 70 72 6f 67 72 61 6d 20 |intless program | 00000710 0d 32 30 52 45 4d 20 28 43 29 31 39 39 36 20 4a |.20REM (C)1996 J| 00000720 6f 65 20 42 6c 6f 67 67 73 20 0d 33 30 44 49 4d |oe Bloggs .30DIM| 00000730 20 63 6f 64 65 25 20 32 35 36 20 0d 34 30 49 4e | code% 256 .40IN| 00000740 50 55 54 22 41 73 73 65 6d 62 6c 65 20 61 74 20 |PUT"Assemble at | 00000750 22 6c 6f 63 24 20 20 20 0d 35 30 6c 6f 63 25 3d |"loc$ .50loc%=| 00000760 45 56 41 4c 28 6c 6f 63 24 29 20 20 20 0d 36 30 |EVAL(loc$) .60| 00000770 52 45 4d 20 44 65 66 69 6e 65 20 6f 73 20 76 61 |REM Define os va| 00000780 72 69 61 62 6c 65 73 20 66 6f 72 20 6c 61 74 65 |riables for late| 00000790 72 20 0d 37 30 6f 73 77 63 3d 26 46 46 45 45 3a |r .70oswc=&FFEE:| 000007a0 6f 73 77 64 3d 26 46 46 46 31 3a 6f 73 66 64 3d |oswd=&FFF1:osfd=| 000007b0 26 46 46 43 45 20 20 0d 38 30 6f 73 66 64 3d 26 |&FFCE .80osfd=&| 000007c0 46 46 43 45 3a 6f 73 70 62 3d 26 46 46 44 34 3a |FFCE:ospb=&FFD4:| 000007d0 6f 73 62 79 3d 26 46 46 46 34 20 20 0d 39 30 46 |osby=&FFF4 .90F| 000007e0 4f 52 58 3d 34 20 54 4f 20 37 20 53 54 45 50 33 |ORX=4 TO 7 STEP3| 000007f0 20 20 0d 31 30 30 4f 25 3d 63 6f 64 65 25 3a 50 | .100O%=code%:P| 00000800 25 3d 6c 6f 63 25 20 20 0d 31 31 30 5b 4f 50 54 |%=loc% .110[OPT| 00000810 58 20 20 0d 31 32 30 4e 4f 50 20 0d 31 33 30 52 |X .120NOP .130R| 00000820 54 53 20 0d 31 34 30 5d 20 0d 31 35 30 4e 45 58 |TS .140] .150NEX| 00000830 54 20 0d 31 36 30 52 45 4d 20 53 61 76 65 20 6d |T .160REM Save m| 00000840 63 6f 64 65 20 74 6f 20 64 69 73 6b 20 61 73 20 |code to disk as | 00000850 75 73 75 61 6c 20 0d 31 37 30 4f 53 43 4c 49 22 |usual .170OSCLI"| 00000860 53 41 56 45 20 4f 55 54 50 55 54 20 22 2b 53 54 |SAVE OUTPUT "+ST| 00000870 52 24 7e 28 61 73 6d 25 29 2b 22 20 0d 22 2b 53 |R$~(asm%)+" ."+S| 00000880 54 52 24 7e 28 4f 25 29 2b 22 20 22 2b 53 54 52 |TR$~(O%)+" "+STR| 00000890 24 7e 28 6c 6f 63 25 29 2b 22 20 0d 22 2b 53 54 |$~(loc%)+" ."+ST| 000008a0 52 24 7e 28 6c 6f 63 25 29 20 20 0d 20 20 0d 20 |R$~(loc%) . . | 000008b0 20 20 52 65 71 75 69 72 65 73 20 6d 6f 64 69 66 | Requires modif| 000008c0 79 69 6e 67 20 69 6e 20 74 68 65 20 66 6f 6c 6c |ying in the foll| 000008d0 6f 77 69 6e 67 20 0d 77 61 79 73 3a 20 2a 52 55 |owing .ways: *RU| 000008e0 4e 20 74 68 65 20 72 65 64 69 72 65 63 74 6f 72 |N the redirector| 000008f0 2c 32 37 4b 41 53 4d 20 0d 20 20 20 20 20 20 53 |,27KASM . S| 00000900 45 54 20 4f 25 3d 26 41 30 30 20 0d 20 20 20 20 |ET O%=&A00 . | 00000910 20 20 44 4f 20 56 44 55 32 35 35 20 61 74 20 74 | DO VDU255 at t| 00000920 6f 70 20 61 6e 64 20 62 6f 74 74 6f 6d 20 20 0d |op and bottom .| 00000930 20 20 20 20 20 20 69 6e 73 69 64 65 20 74 68 65 | inside the| 00000940 20 46 4f 52 2e 2e 2e 4e 45 58 54 20 6c 6f 6f 70 | FOR...NEXT loop| 00000950 20 0d 20 0d 20 20 20 41 6c 74 68 6f 75 67 68 20 | . . Although | 00000960 6e 6f 74 20 65 73 73 65 6e 74 69 61 6c 2c 79 6f |not essential,yo| 00000970 75 20 64 6f 6e 27 74 20 20 6e 65 65 64 20 74 6f |u don't need to| 00000980 20 44 49 4d 20 61 6e 79 20 6d 65 6d 6f 72 79 20 | DIM any memory | 00000990 66 6f 72 20 69 74 20 6e 6f 77 2c 61 6e 64 20 20 |for it now,and | 000009a0 0d 74 68 65 20 2a 53 41 56 45 20 63 6f 6d 6d 61 |.the *SAVE comma| 000009b0 6e 64 20 61 74 20 74 68 65 20 65 6e 64 20 69 73 |nd at the end is| 000009c0 20 6e 6f 74 20 20 6e 65 65 64 65 64 20 61 6e 79 | not needed any| 000009d0 6d 6f 72 65 2c 77 68 69 63 68 20 77 6f 75 6c 64 |more,which would| 000009e0 20 6d 61 6b 65 20 74 68 65 20 0d 61 62 6f 76 65 | make the .above| 000009f0 20 62 65 63 6f 6d 65 3a 20 0d 20 20 0d 31 30 52 | become: . .10R| 00000a00 45 4d 20 50 6f 69 6e 74 6c 65 73 73 20 70 72 6f |EM Pointless pro| 00000a10 67 72 61 6d 20 0d 32 30 52 45 4d 20 28 43 29 31 |gram .20REM (C)1| 00000a20 39 39 36 20 4a 6f 65 20 42 6c 6f 67 67 73 20 0d |996 Joe Bloggs .| 00000a30 33 30 20 0d 34 30 49 4e 50 55 54 22 41 73 73 65 |30 .40INPUT"Asse| 00000a40 6d 62 6c 65 20 61 74 20 22 6c 6f 63 24 20 20 20 |mble at "loc$ | 00000a50 0d 35 30 6c 6f 63 25 3d 45 56 41 4c 28 6c 6f 63 |.50loc%=EVAL(loc| 00000a60 24 29 20 20 20 0d 36 30 52 45 4d 20 44 65 66 69 |$) .60REM Defi| 00000a70 6e 65 20 6f 73 20 76 61 72 69 61 62 6c 65 73 20 |ne os variables | 00000a80 66 6f 72 20 6c 61 74 65 72 20 0d 37 30 6f 73 77 |for later .70osw| 00000a90 63 3d 26 46 46 45 45 3a 6f 73 77 64 3d 26 46 46 |c=&FFEE:oswd=&FF| 00000aa0 46 31 3a 6f 73 66 64 3d 26 46 46 43 45 20 20 0d |F1:osfd=&FFCE .| 00000ab0 38 30 6f 73 66 64 3d 26 46 46 43 45 3a 6f 73 70 |80osfd=&FFCE:osp| 00000ac0 62 3d 26 46 46 44 34 3a 6f 73 62 79 3d 26 46 46 |b=&FFD4:osby=&FF| 00000ad0 46 34 20 20 0d 38 35 2a 52 55 4e 20 32 37 4b 41 |F4 .85*RUN 27KA| 00000ae0 53 4d 20 0d 39 30 46 4f 52 58 3d 34 20 54 4f 20 |SM .90FORX=4 TO | 00000af0 37 20 53 54 45 50 33 20 20 0d 31 30 30 4f 25 3d |7 STEP3 .100O%=| 00000b00 26 41 30 30 3a 50 25 3d 6c 6f 63 25 20 0d 31 30 |&A00:P%=loc% .10| 00000b10 35 56 44 55 32 35 35 20 0d 31 31 30 5b 4f 50 54 |5VDU255 .110[OPT| 00000b20 58 20 20 0d 31 32 30 4e 4f 50 20 0d 31 33 30 52 |X .120NOP .130R| 00000b30 54 53 20 0d 31 34 30 5d 20 0d 31 34 35 56 44 55 |TS .140] .145VDU| 00000b40 32 35 35 20 0d 31 35 30 4e 45 58 54 20 0d 31 36 |255 .150NEXT .16| 00000b50 30 20 0d 31 37 30 20 0d 20 20 0d 20 20 20 41 6c |0 .170 . . Al| 00000b60 73 6f 20 65 6e 63 6c 6f 73 65 64 20 6f 6e 20 74 |so enclosed on t| 00000b70 68 69 73 20 64 69 73 6b 20 61 72 65 20 32 20 20 |his disk are 2 | 00000b80 66 75 72 74 68 65 72 20 74 65 73 74 20 70 72 6f |further test pro| 00000b90 67 72 61 6d 73 2c 77 68 69 63 68 20 64 6f 6e 27 |grams,which don'| 00000ba0 74 20 64 6f 20 0d 61 6e 79 74 68 69 6e 67 20 73 |t do .anything s| 00000bb0 70 65 63 69 61 6c 2c 62 75 74 20 69 6c 6c 75 73 |pecial,but illus| 00000bc0 74 72 61 74 65 20 73 6f 6d 65 20 20 6f 74 68 65 |trate some othe| 00000bd0 72 20 66 65 61 74 75 72 65 73 2e 41 73 20 76 65 |r features.As ve| 00000be0 63 74 6f 72 73 20 61 72 65 20 0d 72 65 70 6f 69 |ctors are .repoi| 00000bf0 6e 74 65 64 20 74 68 65 20 32 37 4b 41 53 4d 20 |nted the 27KASM | 00000c00 70 72 6f 67 72 61 6d 20 73 68 6f 75 6c 64 6e 27 |program shouldn'| 00000c10 74 20 20 62 65 20 2a 52 55 4e 20 74 77 69 63 65 |t be *RUN twice| 00000c20 20 77 69 74 68 6f 75 74 20 70 72 65 73 73 69 6e | without pressin| 00000c30 67 0d 42 52 45 41 4b 20 20 69 6e 20 62 65 74 77 |g.BREAK in betw| 00000c40 65 65 6e 2e 54 68 65 20 70 72 6f 67 72 61 6d 20 |een.The program | 00000c50 77 69 6c 6c 20 77 6f 72 6b 20 77 69 74 68 20 20 |will work with | 00000c60 62 6f 74 68 20 74 68 65 20 54 41 50 45 2c 44 46 |both the TAPE,DF| 00000c70 53 2c 61 6e 64 20 41 44 46 53 2e 20 0d 0d 20 20 |S,and ADFS. .. | 00000c80 20 4e 6f 74 65 20 74 68 61 74 20 69 74 20 75 73 | Note that it us| 00000c90 65 73 20 70 61 67 65 20 26 41 30 30 20 20 28 63 |es page &A00 (c| 00000ca0 61 73 73 65 74 74 65 20 61 6e 64 20 52 53 34 32 |assette and RS42| 00000cb0 33 20 72 65 63 65 69 76 65 20 6f 6e 20 74 68 65 |3 receive on the| 00000cc0 20 20 42 42 43 29 0d 61 73 20 61 20 62 75 66 66 | BBC).as a buff| 00000cd0 65 72 20 66 6f 72 20 42 41 53 49 43 20 74 6f 20 |er for BASIC to | 00000ce0 61 73 73 65 6d 62 6c 65 20 20 74 6f 2e 54 68 65 |assemble to.The| 00000cf0 20 70 72 6f 67 72 61 6d 20 69 74 73 65 6c 66 20 | program itself | 00000d00 6f 63 63 75 70 69 65 73 20 70 61 67 65 20 0d 26 |occupies page .&| 00000d10 43 30 30 20 28 63 68 61 72 61 63 74 65 72 20 72 |C00 (character r| 00000d20 65 64 65 66 20 62 75 66 66 65 72 20 6f 6e 20 42 |edef buffer on B| 00000d30 42 43 20 6f 72 20 20 45 63 6f 6e 65 74 20 77 6f |BC or Econet wo| 00000d40 72 6b 73 70 61 63 65 20 6f 6e 20 74 68 65 20 4d |rkspace on the M| 00000d50 61 73 74 65 72 29 20 73 6f 20 0d 64 6f 6e 27 74 |aster) so .don't| 00000d60 20 72 65 64 65 66 69 6e 65 20 61 6e 79 20 63 68 | redefine any ch| 00000d70 61 72 61 63 74 65 72 73 2e 49 66 20 74 68 65 73 |aracters.If thes| 00000d80 65 20 20 6c 6f 63 61 74 69 6f 6e 73 20 70 6f 73 |e locations pos| 00000d90 65 20 61 20 70 72 6f 62 6c 65 6d 20 74 6f 20 79 |e a problem to y| 00000da0 75 6f 0d 73 65 6e 64 20 20 60 32 2e 35 30 20 77 |uo.send `2.50 w| 00000db0 69 74 68 20 61 20 6e 6f 74 65 20 73 61 79 69 6e |ith a note sayin| 00000dc0 67 20 77 68 65 72 65 20 79 6f 75 72 20 20 70 72 |g where your pr| 00000dd0 65 66 66 65 72 65 64 20 62 75 66 66 65 72 2f 70 |effered buffer/p| 00000de0 72 6f 67 72 61 6d 20 61 72 65 61 73 0d 61 72 65 |rogram areas.are| 00000df0 20 61 6e 64 20 20 49 27 6c 6c 20 73 65 6e 64 20 | and I'll send | 00000e00 79 6f 75 20 61 20 63 75 73 74 6f 6d 69 73 65 64 |you a customised| 00000e10 20 76 65 72 73 69 6f 6e 20 20 62 61 63 6b 20 6f | version back o| 00000e20 6e 20 64 69 73 6b 2e 20 0d 0d 20 20 20 54 68 69 |n disk. .. Thi| 00000e30 73 20 68 61 73 20 62 65 65 6e 20 74 65 73 74 65 |s has been teste| 00000e40 64 20 77 69 74 68 20 42 41 53 49 43 32 20 20 61 |d with BASIC2 a| 00000e50 6e 64 20 42 41 53 49 43 34 2e 49 74 20 77 6f 6e |nd BASIC4.It won| 00000e60 74 20 77 6f 72 6b 20 77 69 74 68 20 42 41 53 49 |t work with BASI| 00000e70 43 31 0d 61 73 20 20 74 68 69 73 20 68 61 73 20 |C1.as this has | 00000e80 6e 6f 20 6f 66 66 73 65 74 20 61 73 73 65 6d 62 |no offset assemb| 00000e90 6c 79 20 6f 70 74 69 6f 6e 2e 20 0d 0d 20 20 20 |ly option. .. | 00000ea0 4c 65 74 20 6d 65 20 6b 6e 6f 77 20 68 6f 77 20 |Let me know how | 00000eb0 79 6f 75 20 67 65 74 20 6f 6e 2c 61 6e 64 20 49 |you get on,and I| 00000ec0 27 6c 6c 20 20 6c 6f 6f 6b 20 66 6f 72 77 61 72 |'ll look forwar| 00000ed0 64 20 74 6f 20 73 65 65 69 6e 67 20 79 6f 75 72 |d to seeing your| 00000ee0 20 32 37 6b 20 0d 61 73 73 65 6d 62 6c 65 72 20 | 27k .assembler | 00000ef0 70 72 6f 67 72 61 6d 73 20 69 6e 20 66 75 74 75 |programs in futu| 00000f00 72 65 20 45 55 47 27 73 20 20 28 61 63 74 75 61 |re EUG's (actua| 00000f10 6c 6c 79 20 74 68 65 79 20 77 6f 6e 74 20 62 65 |lly they wont be| 00000f20 20 54 48 41 54 20 6c 6f 6e 67 20 61 73 20 0d 49 | THAT long as .I| 00000f30 27 76 65 20 66 6f 75 6e 64 20 74 68 61 74 20 72 |'ve found that r| 00000f40 6f 75 67 68 6c 79 20 66 6f 72 20 65 76 65 72 79 |oughly for every| 00000f50 20 37 2e 32 35 20 20 62 79 74 65 73 20 6f 66 20 | 7.25 bytes of | 00000f60 42 41 53 49 43 20 73 6f 75 72 63 65 20 79 6f 75 |BASIC source you| 00000f70 20 77 72 69 74 65 0d 6f 6e 6c 79 20 31 20 20 62 | write.only 1 b| 00000f80 79 74 65 20 6f 66 20 6d 63 6f 64 65 20 69 73 20 |yte of mcode is | 00000f90 67 65 6e 65 72 61 74 65 64 2c 73 6f 20 33 2e 37 |generated,so 3.7| 00000fa0 35 6b 20 6f 66 20 20 6d 63 6f 64 65 20 69 73 20 |5k of mcode is | 00000fb0 6d 6f 72 65 20 72 65 61 6c 69 73 74 69 63 21 29 |more realistic!)| 00000fc0 2e 20 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 |. . | 00000fd0 20 20 20 20 20 20 20 20 20 20 20 20 20 52 2e 50 | R.P| 00000fe0 2e 53 70 72 6f 77 73 6f 6e 20 0d 20 0d |.Sprowson . .| 00000fed
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