10 REM Customization!
20 COMPNAME$ = ""

200 PRINT "Working..."
210 TMPFILE$ = "TEST.TMP"
219 REM Determine the OS and interpretter
220 CMD$ = "ver":GOSUB 5000:GOSUB 10000
230 REM PRINT "INTERPRETER: ";INTERP$
240 REM IF LEN(VERSION$) > 0 THEN PRINT "VERSION: ";VERSION$
250 REM Determine memory 
260 CMD$ = "chkdsk":GOSUB 5000:GOSUB 11000
270 REM CPU Detection
280 GOSUB 12000:GOSUB 12300

500 REM Just produce an MSDOS logo for now
510 DIM LOGO$(25)
520 GOSUB 20000

1000 REM Output time
1001 CLS
1002 GOSUB 30100
1003 GOSUB 3000
1010 R = 2:C=41
1020 IF LEN(COMPNAME$) = 0 THEN GOTO 1100
1030 LOCATE R,C:PRINT COMPNAME$;
1035 R = R + 1
1040 LOCATE R,C:PRINT STRING$(LEN(COMPNAME$),"-");
1095 R = R + 1 
1100 LOCATE R,C:PRINT "Shell: ";INTERP$;
1102 IF LEN(VERSION$) > 0 THEN PRINT " ";VERSION$;
1105 R = R + 1
1110 LOCATE R,C:PRINT "CPU: ";CPU$;
1115 R = R + 1
1120 LOCATE R,C:PRINT "Memory: ";MEMFREE$;" / ";MEMTOTAL$;

1998 LOCATE ROWS, 41:PRINT "Press any key...";
1999 WHILE LEN(INKEY$) = 0:WEND
2000 END

3000 REM Logo output
3010 FOR I = 1 TO ROWS
3020 LOCATE I, 1:PRINT LOGO$(I);
3030 NEXT I
3040 RETURN

5000 REM Run and pipe command
5010 REM TMPFILE$ contains the file for capture
5020 REM CMD$ contains the command to run
5030 SHELL CMD$ + " > " + TMPFILE$
5040 RETURN

10000 REM 'ver' output parser
10010 REM TMPFILE$ contains the file to open
10011 REM output: INTERP$ is the interpeter
10012 REM         VERSION$ is the version
10020 OPEN TMPFILE$ FOR INPUT AS #2
10030 IF EOF(2) THEN GOTO 10060
10040 INPUT#2, VERLINE$
10050 IF LEN(G$) = 0 THEN GOTO 10030 ELSE GOTO 10060
10060 CLOSE#2
10070 REM VERLINE$ now contains the first non-blank version
10080 REM output.  Technically it is just the command 
10090 REM interpreter version.
10100 IDX = INSTR(VERLINE$, "ersion")
10110 IF IDX = 0 THEN INTERP$ = VERLINE$:VERSION$="":RETURN
10120 IDX = IDX - 1
10130 INTERP$ = LEFT$(VERLINE$, IDX - 2)
10140 IDX = IDX + 7
10150 VERSION$ = RIGHT$(VERLINE$, LEN(VERLINE$) - IDX)
10160 FOR IDX = 1 TO LEN(VERSION$)
10170   IF MID$(VERSION$, IDX, 1) = " " THEN VERSION$ = LEFT$(VERSION$,IDX-1)
10180 NEXT IDX
10190 IF INTERP$ = "MS-DOS" OR INTERP$="PC-DOS" THEN INTERP$ = INTERP$ + " Command"
10200 RETURN

11000 REM 'chkdsk' output parser
11010 REM TMPFILE$ contains the file to open
11011 REM output: MEMTOTAL$ is the total memory in bytes
11012 REM         MEMFREE$ is the available memory in bytes
11020 MEMTOTAL$ = "":MEMFREE$ = ""
11030 OPEN TMPFILE$ FOR INPUT AS #2
11040 INPUT#2, MEMLINE$
11050 IDX = INSTR(MEMLINE$, "bytes total memory")
11060 IF IDX > 0 THEN MEMTOTAL$ = LEFT$(MEMLINE$, IDX-1):GOTO 11090
11070 IDX = INSTR(MEMLINE$, "bytes free")
11080 IF IDX > 0 THEN MEMFREE$ = LEFT$(MEMLINE$, IDX-1)
11085 IF EOF(2) THEN GOTO 11110
11090 IF LEN(MEMTOTAL$) = 0 OR LEN(MEMFREE$) = 0 THEN GOTO 11040 ELSE GOTO 11110
11100 RESUME 11110
11110 CLOSE#2
11120 TOTRIM$ = MEMTOTAL$:GOSUB 30000:MEMTOTAL$ = TOTRIM$
11130 TOTRIM$ = MEMFREE$:GOSUB 30000:MEMFREE$ = TOTRIM$
11140 RETURN

12000 REM CPU Identity
12001 DIM Q%(400)
12005 DEF SEG=VARSEG(Q%(0))
12006 OS%=VARPTR(Q%(0))
12007 BWOFFSET = -1 : LASTBYTE = 0
12010 FOR I = 1 TO 100
12020 READ JC:POKE I+OS%, JC
12021 REM Detect where we need to insert an offset for bus width detection
12022 IF LASTBYTE=99 AND JC=0 THEN BWOFFSET = I+OS% - 1
12029 LASTBYTE = JC
12030 NEXT I

12039 REM Need to set the offset for bus width
12040 TGTOFFSET = BWOFFSET + 16
12050 POKE BWOFFSET, (TGTOFFSET MOD 256)
12060 POKE BWOFFSET+1, INT(TGTOFFSET / 256)

12080 CPUQ = 1 + OS%
12090 CALL CPUQ(CPUID%)
12097 DEF SEG

12100 REM         ; Results:
12101 REM         ; 0 - 8088
12102 REM         ; 1 - 8086
12103 REM         ; 2 - V20
12104 REM         ; 3 - V30
12105 REM         ; 4 - 80188
12106 REM         ; 5 - 80186
12107 REM         ; 6 - 80286
12108 REM         ; 7 - 80386+
12109 DATA &H55 : REM         push bp
12110 DATA &H89, &HE5 : REM         mov bp, sp
12111 REM         ; push zero onto the stack and pop it into flags.
12112 REM         ; some bits won't change
12113 DATA &H31, &HC0 : REM         xor ax,ax
12114 DATA &H50 : REM         push ax
12115 DATA &H9D : REM         popf
12116 DATA &H9C : REM         pushf
12117 DATA &H58 : REM         pop ax
12118 DATA &H25, &H00, &HF0 : REM         and ax, 0xf000 ;0f000h
12119 DATA &H3D, &H00, &HF0 : REM         cmp ax, 0xf000 ;0f000h
12120 DATA &H74, &H13 : REM         je lessthantwoeightsix
12121 REM         ; marked as 286 (6)
12122 DATA &HB2, &H06 : REM         mov dl, 6
12123 DATA &HB8, &H00, &H70 : REM         mov ax, 0x7000 ;7000h
12124 DATA &H50 : REM         push ax
12125 DATA &H9D : REM         popf
12126 DATA &H9C : REM         pushf
12127 DATA &H58 : REM         pop ax
12128 DATA &H25, &H00, &H70 : REM         and ax, 0x7000 ;7000h
12129 DATA &H74, &H3A : REM         jz alldone
12130 REM         ; mark as 386 (7)
12131 DATA &HFE, &HC2 : REM         inc dl
12132 DATA &HE9, &H35, &H00 : REM         jmp alldone
12133 REM lessthantwoeightsix:
12134 REM         ; Mark as 80188 (4)
12135 DATA &HB2, &H04 : REM         mov dl, 4
12136 DATA &HB0, &HFF : REM         mov al, 0xff ;0ffh
12137 DATA &HB1, &H21 : REM         mov cl, 0x21 ;21h
12138 DATA &HD2, &HE8 : REM         shr al, cl
12139 REM         ; if the shift leaves zero, it's a 8088 class cpu, else 8018
12140 DATA &H75, &H14 : REM         jnz buswidth
12141 REM         ; Lets see if we have a V2
12142 DATA &HB2, &H02 : REM         mov dl, 2
12143 DATA &HFB : REM         sti
12144 DATA &H56 : REM         push si
12145 DATA &HBE, &H00, &H00 : REM         mov si, 0
12146 DATA &HB9, &HFF, &HFF : REM         mov cx, 0xffff ;0ffffh
12147 REM         ;rep lods [BYTE PTR es:si]
12148 REM         ; INLINE assembler doesn't understand above - must be replaced after...
12149 REM         ; because we need a lods with ES as a parameter
12150 REM         ; so drop a 3-byte nonsense call to be replaced
12151 DATA &HF3, &H26, &HAC : REM         mov cx, 0x0f99 ; replace with 0xF3, 0x26, 0xAC
12152 DATA &H5E : REM         pop si
12153 DATA &H09, &HC9 : REM         or cx, cx
12154 DATA &H74, &H02 : REM         jz buswidth
12155 REM         ; mark as a 808
12156 DATA &HB2, &H00 : REM         mov dl, 0
12157 REM buswidth:
12158 REM         ; we are destroying es now, must be restored later
12159 DATA &H0E : REM         push cs
12160 DATA &H07 : REM         pop es
12161 DATA &HFD : REM         std
12162 REM         ; The 99 _must_ be replaced with the true offset of qqend
12163 DATA &HBF, &H63, &H00 : REM         mov di, 99 ; OFFSET qqend ;99
12164 REM         ;set up al and cx: 0xfb is the 'sti' instruction
12165 DATA &HB0, &HFB : REM         mov al, 0xfb
12166 DATA &HB9, &H03, &H00 : REM         mov cx, 3
12167 REM         ; disable interrupts
12168 DATA &HFA : REM         cli
12169 DATA &HF2, &HAA : REM         rep stosb
12170 DATA &HFC : REM         cld
12171 DATA &H90 : REM         nop
12172 DATA &H90 : REM         nop
12173 DATA &H90 : REM         nop
12174 DATA &H42 : REM         inc dx
12175 DATA &H90 : REM         nop
12176 REM qqend:
12177 DATA &HFB : REM         sti
12178 REM         ; ES must be restored
12179 DATA &H1E : REM         push ds
12180 DATA &H07 : REM         pop es
12181 REM alldone:
12182 REM         ; store in ax
12183 DATA &H30, &HF6 : REM         xor dh, dh
12184 DATA &H8B, &H7E, &H06 : REM         mov di, [bp]+6
12185 DATA &H89, &H15 : REM         mov [di], dx
12186 DATA &H5D : REM         pop bp
12187 DATA &HCA, &H02, &H00 : REM );          {        retf 2}
12188 REM Total Bytes in Data: 100
12200 RETURN

12300 REM Interprets CPUID% and returns a CPU name
12310 DIM CPUNAME$(7)
12320 CPUNAME$(0) = "8088" : CPUNAME$(1) = "8086"
12330 CPUNAME$(2) = "V20" : CPUNAME$(3) = "V30"
12340 CPUNAME$(4) = "80188" : CPUNAME$(5) = "80186"
12350 CPUNAME$(6) = "80286"
12360 CPUNAME$(7) = "80386"
12370 IF CPUID% = 2 OR CPUID% = 3 THEN MFG$ = "NEC" ELSE MFG$ = "Intel"
12380 CPU$ = MFG$+" "+CPUNAME$(CPUID%)
12390 RETURN

20000 REM MS-DOS Logo
20010 LOGO$(1)  = " "
20011 LOGO$(2)  = " &&&&&&     &&&&&&   &&&&&&&&"
20012 LOGO$(3)  = " &&&&&&.   &&&&&&& &&&&&&&&&&&&"
20013 LOGO$(4)  = " &&&&&&&   &&&&&&&.&&&&     &&&&"
20014 LOGO$(5)  = " &&&&&&&   &&&&&&&&&&&+"
20015 LOGO$(6)  = " &&&&&&&; &&&&&&&& &&&&&&&&"
20016 LOGO$(7)  = " &&&&&&&& &&& &&&&   &&&&&&&&&&"
20017 LOGO$(8)  = " &&&& &&&&&&& &&&&        &&&&&&&
20018 LOGO$(9)  = " &&&& &&&&&&& &&&&&&&&       &&&&
20019 LOGO$(10) = " &&&& ;&&&&&  &&&& &&&&+    &&&&&
20020 LOGO$(11) = " &&&&  &&&&&  &&&&  &&&&&&&&&&&$"
20021 LOGO$(12) = " &&&&. &&&&   &&&&     &&&&&&"
20022 LOGO$(13) = " $$$$$$$$$$  $$$$$$$ :::::::."
20023 LOGO$(14) = " $$$$$$$$.$$$$$$$$.::::::::::::"
20024 LOGO$(15) = " $$$$    $$$$$X   :::: &$$ .::::"
20025 LOGO$(16) = " $$$$   $$$$$ $$ .::: $$$$& ...."
20026 LOGO$(17) = " $$$$   $$$$;$$$$ ::::&$$$$"
20027 LOGO$(18) = " $$$$   $$$$ $$$$   ::;$$$$ ::."
20028 LOGO$(19) = " $$$$ . $$$$ $$$$     &$$$$ ::::"
20029 LOGO$(20) = " $$$$   $$$&$$$$$:::: $$$$& .::::"
20030 LOGO$(21) = " $$$$..    $$$$$$::::: $$$ ..::::"
20031 LOGO$(22) = " $$$$$$$$$$$$$$$$&::::::::::::::"
20032 LOGO$(23) = " $$$$$$$$$$$$$$$$$$..::::::::.."
20033 LOGO$(24) = " "
20034 LOGO$(25) = " "
20035 RETURN

30000 REM String Trim Function
30010 REM input/output: TOTRIM$
30015 IF LEN(TOTRIM$) = 0 THEN RETURN
30016 IF INSTR(TOTRIM$, " ") = 0 THEN RETURN
30020 FOR IDX = 1 TO LEN(TOTRIM$):IF MID$(TOTRIM$, IDX, 1) <> " " THEN GOTO 30030:NEXT IDX
30030 FOR RDX = LEN(TOTRIM$) TO IDX STEP -1:IF MID$(TOTRIM$, RDX, 1) <> " " THEN GOTO 30050:NEXT RDX
30040 TOTRIM$ = MID$(TOTRIM$, IDX, RDX - IDX)
30050 RETURN

30100 REM Row check
30110 REM output: ROWS - number of screen rows
30120 ON ERROR GOTO 30150
30130 LOCATE 25,1
30140 ROWS=25:GOTO 30170
30150 RESUME 30160
30160 ROWS=24
30170 ON ERROR GOTO 0
30180 RETURN