SX Microcontroller RS232 IO ISR Calc

Finds any combination of Clock, PreScale, Increment, Baudrate, and ISR rate within specified allowable error

Clock	Pre Scale	RTCC Inc	Max ISR Cycles	ISR Rate	Rates, per division w/ percent error Timing period (min / max), per counter width w/ max drift
Given Max Baud Err = 0.75% and Max Timer Drift = 0%

6.144Mhz	1	255	255	24.094118Khz	÷5=4800, ÷10=2400, ÷20=1200, ÷40=600, ÷80=300
6.144Mhz	1	254	254	24.188976Khz	÷81=300
6.144Mhz	1	253	253	24.284585Khz	÷81=300
6.144Mhz	1	252	252	24.380952Khz	÷81=300
6.144Mhz	1	251	251	24.478088Khz	÷41=600, ÷81=300+0.73%, ÷82=300
6.144Mhz	1	250	250	24.576000Khz	÷41=600, ÷82=300
6.144Mhz	1	249	249	24.674699Khz	÷41=600, ÷82=300
6.144Mhz	1	248	248	24.774194Khz	÷41=600+0.70%, ÷82=300+0.70%, ÷83=300-0.51%
6.144Mhz	1	247	247	24.874494Khz	÷83=300
6.144Mhz	1	246	246	24.975610Khz	÷83=300
6.144Mhz	1	245	245	25.077551Khz	÷21=1200, ÷42=600, ÷83=300+0.71%, ÷84=300
6.144Mhz	1	244	244	25.180328Khz	÷21=1200, ÷42=600, ÷84=300
6.144Mhz	1	243	243	25.283951Khz	÷21=1200, ÷42=600, ÷84=300
6.144Mhz	1	242	242	25.388430Khz	÷21=1200+0.74%, ÷42=600+0.74%, ÷84=300+0.74%, ÷85=300
6.144Mhz	1	241	241	25.493776Khz	÷85=300
6.144Mhz	1	240	240	25.600000Khz	÷85=300
6.144Mhz	1	239	239	25.707113Khz	÷43=600, ÷86=300
6.144Mhz	1	238	238	25.815126Khz	÷43=600, ÷86=300
6.144Mhz	1	237	237	25.924051Khz	÷43=600, ÷86=300, ÷87=300-0.68%
6.144Mhz	1	236	236	26.033898Khz	÷87=300

Clock Speeds:	(ex: 3.27895 MHz = 3.27895, leave blank for common values)
Prescales:	(leave blank for all values or enter a comma delimited list)
Max RTCC Increment:	(leave blank for all values or enter a single value)
Max UART ISR Subroutine Call Divide Rate:	(leave blank for 255 or enter a single value)
Baud Rates:	(leave blank for common values)
Allowable Error:	(ex: 3 = 3 percent or .97 to 1.03)