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a1basic
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Document the null statement execution "routine", which is just an RTS.

This commit is contained in:
Eric Smith 2020-08-26 12:36:01 -06:00
parent d7e6f6be29
commit 7616bbbd7d
1 changed files with 5 additions and 3 deletions
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a1basic.asm
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@ -1297,7 +1297,9 @@ var_assign: jsr get16bit
sta (aux),y
inx
Te816: rts
null_stmt: rts ; used to execute LET keyword or colon
; (statement separator), which need no
; processing
begin_line: pla
pla
@ -1538,7 +1540,7 @@ verb_addr_h: rmb $78
verb $22,$55,$e823 ; ( used in string DIM
verb $23,$00,$e109 ; ,
verb $24,$ab,$e85b ; THEN followed by a line number
verb $25,$ab,$e816 ; THEN followed by a statement
verb $25,$ab,null_stmt ; THEN followed by a statement
verb $26,$03,$efb6 ; , used in string INPUT
verb $27,$03,$ebcb ; , used in numeric input
verb $28,$ff,$ffff
@ -1595,7 +1597,7 @@ verb_addr_h: rmb $78
verb $5b,$03,return_stmt ; RETURN
verb $5c,$03,gosub_stmt ; GOSUB
verb $5d,$00,$ffff ; REM
verb $5e,$ab,$e816 ; LET
verb $5e,$ab,null_stmt ; LET
verb $5f,$03,goto_stmt ; GOTO
verb $60,$57,if_stmt ; IF
verb $61,$03,print_str ; PRINT string