Die Ergebnisse für 9.830400 MHz (Baudratenquarz) bei 2% zulässiger Toleranz:

UBRR_VALUE(4800) = 127
UBRR_VALUE2X(4800) = 255
ACT_RATE(4800) = 4800
ACT_RATE2X(4800) = 4800
ERROR(4800) = 0
ERROR2X(4800) = 0
UBRR_VAL(4800) = 127
USE_2X(4800) = 0
TOLERANCE_EXCEEDED(4800) = 0

UBRR_VALUE(9600) = 63
UBRR_VALUE2X(9600) = 127
ACT_RATE(9600) = 9600
ACT_RATE2X(9600) = 9600
ERROR(9600) = 0
ERROR2X(9600) = 0
UBRR_VAL(9600) = 63
USE_2X(9600) = 0
TOLERANCE_EXCEEDED(9600) = 0

UBRR_VALUE(19200) = 31
UBRR_VALUE2X(19200) = 63
ACT_RATE(19200) = 19200
ACT_RATE2X(19200) = 19200
ERROR(19200) = 0
ERROR2X(19200) = 0
UBRR_VAL(19200) = 31
USE_2X(19200) = 0
TOLERANCE_EXCEEDED(19200) = 0

UBRR_VALUE(38400) = 15
UBRR_VALUE2X(38400) = 31
ACT_RATE(38400) = 38400
ACT_RATE2X(38400) = 38400
ERROR(38400) = 0
ERROR2X(38400) = 0
UBRR_VAL(38400) = 15
USE_2X(38400) = 0
TOLERANCE_EXCEEDED(38400) = 0

UBRR_VALUE(57600) = 10
UBRR_VALUE2X(57600) = 20
ACT_RATE(57600) = 55854
ACT_RATE2X(57600) = 58514
ERROR(57600) = 1746
ERROR2X(57600) = 914
UBRR_VAL(57600) = 20
USE_2X(57600) = 1
TOLERANCE_EXCEEDED(57600) = 0

UBRR_VALUE(115200) = 4
UBRR_VALUE2X(115200) = 10
ACT_RATE(115200) = 122880
ACT_RATE2X(115200) = 111709
ERROR(115200) = 7680
ERROR2X(115200) = 3491
UBRR_VAL(115200) = 10
USE_2X(115200) = 1
TOLERANCE_EXCEEDED(115200) = 1

ANY_WARNING(BAUDRATES) = 1
127, 0, "4800"
63, 0, "9600"
31, 0, "19200"
15, 0, "38400"
20, 1, "57600"
10, 1, "115200"

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Die Ergebnisse für 10 MHz bei 2% zulässiger Toleranz:

UBRR_VALUE(4800) = 129
UBRR_VALUE2X(4800) = 259
ACT_RATE(4800) = 4807
ACT_RATE2X(4800) = 4807
ERROR(4800) = 7
ERROR2X(4800) = 7
UBRR_VAL(4800) = 129
USE_2X(4800) = 0
TOLERANCE_EXCEEDED(4800) = 0

UBRR_VALUE(9600) = 64
UBRR_VALUE2X(9600) = 129
ACT_RATE(9600) = 9615
ACT_RATE2X(9600) = 9615
ERROR(9600) = 15
ERROR2X(9600) = 15
UBRR_VAL(9600) = 64
USE_2X(9600) = 0
TOLERANCE_EXCEEDED(9600) = 0

UBRR_VALUE(19200) = 32
UBRR_VALUE2X(19200) = 64
ACT_RATE(19200) = 18939
ACT_RATE2X(19200) = 19230
ERROR(19200) = 261
ERROR2X(19200) = 30
UBRR_VAL(19200) = 64
USE_2X(19200) = 1
TOLERANCE_EXCEEDED(19200) = 0

UBRR_VALUE(38400) = 15
UBRR_VALUE2X(38400) = 32
ACT_RATE(38400) = 39062
ACT_RATE2X(38400) = 37878
ERROR(38400) = 662
ERROR2X(38400) = 522
UBRR_VAL(38400) = 32
USE_2X(38400) = 1
TOLERANCE_EXCEEDED(38400) = 0

UBRR_VALUE(57600) = 10
UBRR_VALUE2X(57600) = 21
ACT_RATE(57600) = 56818
ACT_RATE2X(57600) = 56818
ERROR(57600) = 782
ERROR2X(57600) = 782
UBRR_VAL(57600) = 10
USE_2X(57600) = 0
TOLERANCE_EXCEEDED(57600) = 0

UBRR_VALUE(115200) = 4
UBRR_VALUE2X(115200) = 10
ACT_RATE(115200) = 125000
ACT_RATE2X(115200) = 113636
ERROR(115200) = 9800
ERROR2X(115200) = 1564
UBRR_VAL(115200) = 10
USE_2X(115200) = 1
TOLERANCE_EXCEEDED(115200) = 0

ANY_WARNING(BAUDRATES) = 0
129, 0, "4800"
64, 0, "9600"
64, 1, "19200"
32, 1, "38400"
10, 0, "57600"
10, 1, "115200"

Man sieht: ein Baudratenquarz bringt nicht unbedingt bessere Ergebnisse...