view lib/kreiderclib/getc.as @ 3140:03b580a02945

Allow CoCo3FPGA-specific build of superdesc.asm Added new conditional CC3FPGA and code to "level1/modules/superdesc.asm" to reflect changes needed to build the new SD card descriptors for the Coco3FPGA.
author Bill Pierce <merlinious999@gmail.com>
date Sat, 04 Feb 2017 11:06:26 +0100
parents 1647f1874cdf
children
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* Disassembly by Os9disasm of getc.r

 section code

getc: pshs  u 
 ldu   4,s 
 beq   L005f 
 lda   6,u 
 anda  #1 
 bne   L005f 
 ldx   ,u 
 cmpx  4,u 
 bcc   L0064 
L0012 ldb   ,x+ 
L0014 stx   ,u 
 clra   
 puls  u,pc 
ungetc: pshs  u 
 ldu   6,s 
 beq   L005f 
 ldb   7,u 
 andb  #1 
 beq   L005f 
 ldd   4,s 
 cmpd  #-1 
 beq   L005f 
 ldx   ,u 
 cmpx  2,u 
 beq   L005f 
 stb   ,-x 
 bra   L0014 
getw: pshs  u 
 ldu   4,s 
 pshs  u,pc 
 bsr   getc 
 std   2,s 
 cmpd  #-1 
 beq   L0051 
 bsr   getc 
 cmpd  #-1 
 beq   L0051 
 lda   3,s 
L0051 leas  4,s 
 puls  u,pc 
L0055 ldb   #$10 
 bra   L005b 
L0059 ldb   #$20 
L005b orb   7,u 
 stb   7,u 
L005f ldd   #-1 
 puls  u,pc 
L0064 ldd   6,u 
 anda  #$80 
 andb  #$31 
 cmpb  #1 
 bne   L005f 
 cmpa  #$80 
 beq   L0079 
 pshs  u 
 lbsr  _setbase 
 leas  2,s 
L0079 leax  _iob,y 
 pshs  x 
 cmpu  ,s++ 
 bne   L0095 
 ldb   7,u 
 andb  #$40 
 beq   L0095 
 leax  _iob+13,y 
 pshs  x 
 lbsr  fflush 
 leas  2,s 
L0095 ldb   7,u 
 andb  #8 
 beq   L00b0 
 ldd   11,u 
 pshs  d 
 ldx   2,u 
 ldd   8,u 
 pshs  d,x 
 ldb   7,u 
 andb  #$40 
 beq   L00bd 
 lbsr  readln 
 bra   L00c0 
L00b0 ldd   #1 
 pshs  d 
 leax  10,u 
 stx   2,u 
 ldd   8,u 
 pshs  d,x 
L00bd lbsr  read 
L00c0 leas  6,s 
 std   -2,s 
 beq   L0055 
 bmi   L0059 
 ldx   2,u 
 leax  d,x 
 stx   4,u 
 ldx   2,u 
 lbra  L0012 

 endsect