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2BF1: THE 'STK-FETCH' SUBROUTINE
Used by the routines at PROGNAME, SAVE_ETC, OPEN_2, VAR_A_1, PR_ITEM_1, SLICING, LET, usr, compare, strs_add, val, code and len.
This important subroutine collects the 'last value' from the calculator stack. The five bytes can be either a floating-point number, in 'short' or 'long' form, or a set of parameters that define a string.
Input
Output
A First byte
B Fifth byte
C Fourth byte
D Third byte
E Second byte
STK_FETCH 2BF1 LD HL,($5C65) Get STKEND.
2BF4 DEC HL Back one.
2BF5 LD B,(HL) The fifth value.
2BF6 DEC HL Back one.
2BF7 LD C,(HL) The fourth value.
2BF8 DEC HL Back one.
2BF9 LD D,(HL) The third value.
2BFA DEC HL Back one.
2BFB LD E,(HL) The second value.
2BFC DEC HL Back one.
2BFD LD A,(HL) The first value.
2BFE LD ($5C65),HL Reset STKEND to its new position.
2C01 RET Finished.
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