diff options
Diffstat (limited to 'dla.s')
| -rw-r--r-- | dla.s | 24 |
1 files changed, 19 insertions, 5 deletions
@@ -136,8 +136,15 @@ printbanner: ; use CIO to read input, so user can use backspace/etc. jsr readline lda linebuf + + ; check for error (user hit Break or Ctrl-3 for EOF). + cpy #1 + bne printbanner + + ; if user hit Return by itself, use the old value. cmp #$9b - beq usedefault ; if user hit Return + beq prompt4seed + ; use floating point ROM to convert input to an integer. lda #0 sta CIX @@ -153,8 +160,7 @@ printbanner: stx maxparticles sta maxparticles+1 -usedefault: - +prompt4seed: ; print seed type prompt lda #<seedprompt ldx #>seedprompt @@ -168,7 +174,10 @@ usedefault: jsr printmsg readseed: - jsr getchrx + jsr getchr ; N.B. getchrx won't work here (see io.s) + cpy #1 + bne readseed + cmp #$9b beq dfltseed ; use default if user pressed return cmp #$31 @@ -285,7 +294,7 @@ main_done: waitkey: jsr getchr - ; see what key was hit + ; see what key was hit. don't need extra code for Break or ^3 here. and #$5f ; ignore case cmp #'R' ; Redo bne notredo @@ -306,9 +315,14 @@ saveimage: jsr restore_gr0 ; back to GR.0, so we can... lda #<saveprompt ldx #>saveprompt +siprompt: jsr printmsg ; ...prompt for, and... jsr readline ; ...let the user type a filename. + ; if user hit Break or ^3, prompt again. + cpy #1 + bne siprompt + jsr close1 ; make sure the IOCB is closed before we open it! ; prepend D: to the filename, if there's no device given. |