Browse Source
Merge pull request #138 from codorjan/duart
DUART: fix detection of SC26C92 devices
pull/140/head
Wayne Warthen
6 years ago
committed by
GitHub
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1 changed files with
2 additions and
2 deletions
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Source/HBIOS/duart.asm
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@ -693,8 +693,8 @@ DUART_DETECT: |
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LD A,DUART_CR_MR0 ; SET POINTER TO MR0 |
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DUART_OUTP(DUART_CR) ; POINTER IS STILL MR2 ON OTHER CHIPS |
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DUART_INP(DUART_MR) ; GET VALUE OF MR0 IN A |
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CP 1 ; CHECK FOR TEST VALUE |
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JR Z,DUART_DETECT_26C92 ; YES, MUST BE A '92 WITH MR0 |
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AND 1 ; MASK TEST VALUE IN BIT 1 |
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JR NZ,DUART_DETECT_26C92 ; IF IT'S SET, THIS MUST BE A '92 WITH MR0 |
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JR DUART_DETECT_XR88C681 ; ASSUME WE HAVE A FANCY EXAR CHIP |
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; |
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