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Request to Tandy 1000 ( 01.00.00) / 1000EX / 1000TX / 1000HX / 1000TL user
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ibmp...@naver.com
Mar 23, 2013, 3:18:46 AM3/23/13
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If anyone have the following machines, can you run this BASIC program and show the result from SUM 0 to SUM 7?
Tandy 1000 (Original 01.00.00 user only), 1000EX, 1000TX, 1000HX, 1000TL , 1000TL/2
This is BIOS checksum program
10 CLS
20 DEF SEG=&HF000
30 FOR B=0 TO 7
40 GOSUB 60
50 NEXT:END
60 A=0:FOR I=&H2000*B TO &H2000*(B+1)-1
70 A=A+PEEK(I):NEXT
80 PRINT"SUM";B+1?B;"=";A
90 RETURN
According to Tandy 1000HX, the result is following as.
SUM 0 = 729800
SUM 1 = 734842
SUM 2 = 881996
SUM 3 = 702017
SUM 4 = 862721
SUM 5 = 531629
SUM 6 = 902557
SUM 7 = 941086
I don't know if this value is correct.
Tandy 1000 BIOS doesn't have checksum byte.
So it can't be verified BIOS checksum is correct or not.
But this program is helpful to check the BIOS sum.
Tandy 1000 (Original 01.00.00 user only), 1000EX, 1000TX, 1000HX, 1000TL , 1000TL/2
This is BIOS checksum program
10 CLS
20 DEF SEG=&HF000
30 FOR B=0 TO 7
40 GOSUB 60
50 NEXT:END
60 A=0:FOR I=&H2000*B TO &H2000*(B+1)-1
70 A=A+PEEK(I):NEXT
80 PRINT"SUM";B+1?B;"=";A
90 RETURN
According to Tandy 1000HX, the result is following as.
SUM 0 = 729800
SUM 1 = 734842
SUM 2 = 881996
SUM 3 = 702017
SUM 4 = 862721
SUM 5 = 531629
SUM 6 = 902557
SUM 7 = 941086
I don't know if this value is correct.
Tandy 1000 BIOS doesn't have checksum byte.
So it can't be verified BIOS checksum is correct or not.
But this program is helpful to check the BIOS sum.
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