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Corrected and updated MOS API entry block
Created default vector table
Vectors initialised from default vector table
Corrected OSFILE error numbers
PRSTR prints via OSASCI
Laid out zero page workspace
Added OUT2HEX, optimised OUTHEX
Added WRCH wrapper to OUTCHAR
OSRDLINE recognises BS for delete
RDCH sets ESCFLAG if Escape returned, lets REPEAT PRINT GET:UNTIL 0 to stop

Update20210725.txt

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+Updates to Applecorn MOS 25-Jul-2021
+------------------------------------
+
+Corrected and updated MOS API entry block
+Created default vector table
+Vectors initialised from default vector table
+Corrected OSFILE error numbers
+PRSTR prints via OSASCI
+Laid out zero page workspace
+Added OUT2HEX, optimised OUTHEX
+Added WRCH wrapper to OUTCHAR
+OSRDLINE recognises BS for delete
+RDCH sets ESCFLAG if Escape returned, lets REPEAT PRINT GET:UNTIL 0 to stop

build.bat

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+cd /d %0\..
+merlin32 -V . applecorn.s
+copy applecorn applecorn#062000
+pause

notes.txt

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+Apple IIe colours
+
+Apple         BBC IBGR
+0 Black        0  0000
+8 Brown        1  0001
+4 Dark Green   2  0010
+9 Orange       3  0011
+2 Dark Blue    4  0100
+3 Purple       5  0101
+6 Medium Blue  6  0100
+5 Grey 1      7/8       1000 or 1001
+A Grey 2      7/8       1000 or 1001
+B Pink         9  1001
+C Light Green  A  1010
+D Yellow       B  1011
+7 Light Blue   C  1100
+1 Magenta      D  1101
+E Aquamarine   E  1110
+F White        F  1111