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Merge pull request #220 from lynchaj/patch-15
Update dbgmon.asm, fix data bus check
patch
Wayne Warthen
5 years ago
committed by
GitHub
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1 changed files with
4 additions and
2 deletions
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Source/Apps/ramtest/dbgmon.asm
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@ -916,8 +916,9 @@ DORAMTEST: |
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LD A,$00 ; INITIALIZE A TO 0 |
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DATABUSCHECK: |
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LD C,A |
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LD ($0000),A ; WRITE TO LOWEST RAM ADDRESS |
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LD C,($0000) ; READ VALUE FROM LOWEST RAM ADDRESS |
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LD A,($0000) ; READ VALUE FROM LOWEST RAM ADDRESS |
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CP C ; IS IT SAME AS WRITTEN? |
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JP NZ,DATABUSFAIL ; NO? DATA BUS FAIL HANDLER ROUTINE |
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INC A ; YES, GET NEXT VALUE |
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@ -947,7 +948,8 @@ DATABUSFAIL: |
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ADDRBUSCHECK: |
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LD (HL),$FF ; WRITE ALL ONES INTO HL ADDRESS |
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LD C,($0000) ; READ VALUE FROM LOWEST RAM ADDRESS |
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LD C,$00 |
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LD A,($0000) ; READ VALUE FROM LOWEST RAM ADDRESS |
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CP C ; IS IT SAME AS WRITTEN? SHOULD BE 0 |
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JP NZ,ADDRBUSFAIL ; NO? ADDR BUS FAIL HANDLER ROUTINE |
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PUSH HL ; STORE HL, FOR COPY TO BC |
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