2019-04-29 20:36:58 +00:00
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NEW
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AUTO 3,1
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* object code = sel_2
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*
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* Alternate program selector segment for P8 when used in conjunction with
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* gs/os. This code is used in place of the standard P8 interactive program
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* selector when P8 is started up by GQuit. It is called when passing control
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* from one application to another and the new application is 8-bit. This
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* code first loads the specified P8 application at $2000 in bank 0 of memory.
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* It then checks the message center for a possible name of a file. this file
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* is passed on to the 8-bit application. This segment then passes control to
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* the freshly loaded app. This code does NOT start with a CLD instruction
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* (as other replacement quit code is supposed to do) because GQuit checks
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* this to see if this version of quit code is available.
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ofsQ .EQ GQdisp-dispadr offset to GQuit dispatcher org
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msb off
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GQdisp lda ramin read/write LC bank 1
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clc
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xce 16 bit native mode.
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jmp >P8QUIT go to GQuit.
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2019-05-07 11:18:47 +00:00
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.DA #0000000000' offset to paragraph boundary.
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2019-04-29 20:36:58 +00:00
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dc c'GQ' id bytes so GQuit can identify this
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* load application
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*
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* Entry is in 16-bit native mode. Exit is in emulation mode.
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*
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* On entry and exit:
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* Data bank register is set to $00.
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* Direct register is set to $0000.
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* Stack pointer is set to $01FB.
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*
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* Inputs: acc = value of E1_OS_Switch (0 or 1, 1 = yes to switch)
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*
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* This code is moved to $00/1010 and executed there.
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* first, copy the prefix passed from gs/os to our own volume name buffer
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* so in case of an error setting the P8 prefix, it can be displayed in the
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* error message.
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SHORT M 8 bit accumulator
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LONGI ON
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pha save the switch status.
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ldx #inbuf point to passed prefix.
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jsr copyvol copy the name into the buffer.
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pla retrieve the switch status
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* go into emulation mode to load and run Prodos 8 application
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sec
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xce 8 bit emulation mode
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ora #$00 switching from P16 to P8 ?
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beq L602D no.
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* switching from P16 to P8 so pass prefix 0 from P16 to the P8 prefix. the
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* prefix is passed at $00/0200 by GQuit.
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L6020 jsr MLI set prefix
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2019-05-07 11:18:47 +00:00
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.DA #$C6'
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.DA pfxparms'
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2019-04-29 20:36:58 +00:00
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bcc L602D if prefix ok.
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jsr gqerror error handler.
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bra L6020 try again
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* load application at $2000
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L602D xce native mode (carry clear)
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LONG I 16 bit regs, 8 bit acc.
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lda PrefixBuf+1 is the application name
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cmp #$2F a complete pathname ?
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bne L603D no, use prefix as volume name
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ldx #PrefixBuf else use the application name.
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jsr copyvol copy the volume name to buffer.
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L603D sec back to emulation mode.
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xce
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L603F jsr MLI open the application file
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2019-05-07 11:18:47 +00:00
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.DA #$C8'
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.DA opnparms'
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2019-04-29 20:36:58 +00:00
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bcc L604C if open ok.
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jsr gqerror handle error.
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bra L603F try again.
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L604C lda oprefnum copy ref number to parameter lists
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sta eofrefn
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sta rdrefnum
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sta closeref
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* do a geteof call for how many bytes to read
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L6058 jsr MLI get eof
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2019-05-07 11:18:47 +00:00
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.DA #$D1'
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.DA eofparms'
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2019-04-29 20:36:58 +00:00
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bcc L6065 eof ok.
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jsr gqerror handle error.
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bra L6058 try again.
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* store the size of the file in the read parameter list
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L6065 lda eofval
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sta rdcount
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lda eofval+1
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sta rdcount+1
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L6071 jsr MLI read
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2019-05-07 11:18:47 +00:00
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.DA #$CA'
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.DA readparm'
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2019-04-29 20:36:58 +00:00
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bcc L607E read ok
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jsr gqerror
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bra L6071
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L607E jsr MLI close
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2019-05-07 11:18:47 +00:00
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.DA #$CC'
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.DA closeprm'
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2019-04-29 20:36:58 +00:00
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bcc L608B close ok
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jsr gqerror
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bra L607E
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L608B jsr dolaunch check for possible 2nd pathname.
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bne L6099 if none then run program
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jsr ckfordrv else make sure the file is online.
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bcc L6099 if so then run the program.
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lda #$45 volume not found error.
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bra L60AB
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L6099 lda romin enable ROM
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jmp sysentry execute the system application
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gqerror .EQ *-ofsQ
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clc
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xce 16 bit native mode
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LONG I,M
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jsr mountvol mount volume.
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bcs L60AB if error.
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sec back to emulation mode.
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xce
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rts
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* generate a fatal error while running under Prodos 8.
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* on input, acc = error code. this routine does not return.
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L60AB clc native mode
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xce
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LONG I,M
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and #$00FF mask off high byte of error code.
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pha put on stack for IntMath tool call.
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pea $0000 errval>>16
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pea errval push address of string buffer.
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pea $0004 make string 4 digits long.
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_Int2Hex convert value to hex string.
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pha make space for return value.
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pea $0000 quitstr1>>16
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pea quitstr1 push first error message address
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pea $0000 quitstr2>>16
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pea quitstr2 push second error message address
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pea $0000 button1>>16
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pea button1 push first button text address
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pea $0000 quitbtn2>>16
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pea quitbtn2 push 2nd button text address (null)
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_TLTextMountVolume make the dialog box
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pla retrieve button press (not used)
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sec emulation mode
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xce
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jsr MLI quit back to GQuit
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2019-05-07 11:18:47 +00:00
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.DA #$65'
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.DA quitparms'
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2019-04-29 20:36:58 +00:00
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* p8 mount volume
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*
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* on entry: volbuf = name of volume to mount.
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* on exit: carry clear if mount volume displayed and 'return' was pressed.
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* carry set if no window displayed or if had window and 'esc' pressed.
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mountvol .EQ *-ofsQ
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ldy #$0000 volbuf>>16
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ldx #volbuf set up pointer to volume name.
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* if error is 'volume not found' or 'no disk in drive' then display the
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* Mount Volume window, otherwise return with carry set.
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and #$00FF mask just in case.
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cmp #$0045 volume not found ?
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beq L6101 yes
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cmp #$002F no disk in drive ?
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beq L6101 yes
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sec indicate error not handled.
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rts return with error code still in acc.
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L6101 pha save error code in case esc pressed.
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phy pointer to volume name.
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phx
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tsc
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phd save D reg.
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tcd point D reg at stack.
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lda [$01] get length byte and leading separator.
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dec a don't count leading separator.
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xba then swap the bytes so the volume name
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sta [$01] doesn't cpntain the separator.
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pha room for result.
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pea $0000 mountmsg>>16
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pea mountmsg
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phy hi word of pointer to volume name.
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inx skip separator.
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phx lo word of pointer to volume name.
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pea $0000 button1>>16
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pea button1 'Return'
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pea $0000 button2>>16
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pea button2 'Escape'
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_TLTextMountVolume
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lda [$01] restore first 2 bytes of vilume name
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xba back to their original positions
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inc a and values.
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sta [$01]
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pla which button: 1=Return 2=Escape.
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pld restore D reg.
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plx pull volume name pointer off stack
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plx
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cmp #$0001 which button was pressed ?
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bne L613C if Escape pressed.
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clc indicate Return was pressed.
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pla pull original error code off stack.
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rts return with carry clear.
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L613C sec indicate Escape was pressed.
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pla restore error code.
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rts return with carry set.
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* copy the volume name from the given pathname to the volume name buffer.
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*
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* inputs: x = length byte of complete pathname containing volume name.
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* output: volume name is stored in volbuf.
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copyvol .EQ *-ofsQ
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lda |1,x get the first slash
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sta volbuf+1
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ldy #$0002 initialize the length count.
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LONGI OFF
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LONGA OFF
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L6148 lda |2,x now copy the volume name up to
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cmp #$2F the separating slash.
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beq L6156
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sta volbuf,y
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inx
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iny
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bra L6148
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L6156 dey fix character count.
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tya length.
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sta volbuf store the resultant string length.
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rts
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* translate a filename message from the message center to the currently
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* launching P8 application if it can accept a second filename. If found,
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* copy the filename into the application's filename buffer.
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* on exit, the z-flag is set if a filename was correctly passed to the
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* application elst the z-flag is clear if it couldn't be done.
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dolaunch .EQ *-ofsQ
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lda sysentry does the app start with a jump ?
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cmp #$4C
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bne L616F no, doesn't follow the convention.
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lda #$EE check for the signature bytes.
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cmp sysentry+3
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bne L616F 1st one doesn't match, skip it.
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cmp sysentry+4
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beq L6170 both match, go get a filename message.
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L616F rts just return to launch the app.
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L6170 lda #$FF put flag conditioning value on
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pha the stack (assume error).
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clc native 16-bit mode.
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xce
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LONG I,M
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pha make room on stack for user id.
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_MMStartUp start up the memory manager.
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pla get the user id and
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pha leave it on the stack.
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pha
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pha make room on stack for new handle.
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pea $0000
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pea $000A get a 10 byte block of memory.
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pha put user id on stack.
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pea $0000 totally unrestricted block.
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pha LocationPtr (not used)
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pha
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_NewHandle go get the block of memory.
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pla get the handle from the stack.
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plx
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bcs L620A branch if error, no memory available.
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phx leave the handle on the stack.
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pha
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pea $0002 'get' a message.
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pea $0001 get a type 1 (filename) message.
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phx put the message handle on the stack
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pha (still in acc and x regs)
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_MessageCenter
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bcs L6203 branch if no message.
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pha leave 4 bytes free on stack
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|
|
pha (will be used as a direct page pointer)
|
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|
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|
|
tsc get the stack pointer.
|
|
|
|
|
|
phd save current direct register.
|
|
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|
|
inc a point to new direct page space.
|
|
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|
|
tcd make a new direct page.
|
|
|
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|
|
lda [$04] de-reference the handle.
|
|
|
|
|
|
sta $00
|
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|
|
ldy #$0002
|
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|
|
lda [$04],y
|
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|
|
sta $02
|
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|
|
ldy #$0006 get the message command.
|
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|
|
lda [$00],y
|
|
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|
|
bne bad_msg if print, then skip it.
|
|
|
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|
|
lda $00 adjust pointer to filename string.
|
|
|
|
|
|
clc
|
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|
|
adc #$0008
|
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|
|
sta $00
|
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|
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|
|
bcc L61D1
|
|
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|
|
inc $02
|
|
|
|
|
|
L61D1 lda [$00] get the length of the string.
|
|
|
|
|
|
and #$00FF mask off high (leaving just the length)
|
|
|
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|
|
SHORT M 8 bit accumulator
|
|
|
|
|
|
cmp sysentry+5 check against length of app buffer.
|
|
|
|
|
|
beq L61DF if equal then continue with move.
|
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|
|
bcs bad_msg if too long then bad message.
|
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|
L61DF tay string length.
|
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|
|
L61E0 lda [$00],y get a character.
|
|
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|
|
sta sysentry+6,y store it in the app's filename buffer
|
|
|
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|
|
sta inbuf,y and in prefix buffer.
|
|
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|
|
dey
|
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|
|
bpl L61E0
|
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|
|
lda #$00 change flag conditioning value on stack
|
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|
|
sta $0D,s to indicate a filename is passed.
|
|
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|
|
bad_msg LONG M 16-bit acc.
|
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|
|
pld restore direct register.
|
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|
|
pla fix stack because handle and userid
|
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|
pla still on stack.
|
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|
|
pea $0003 now delete the message (done with it).
|
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|
|
pea $0001 message type 1.
|
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|
|
pha garbage handle (not used).
|
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|
pha
|
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|
|
_MessageCenter go delete the message.
|
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|
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|
|
L6203 _DisposeHandle throw away message (handle is on stack)
|
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|
|
L620A _MMShutDown shutdown the memory manager (userid is
|
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|
|
|
sec on stack).
|
|
|
|
|
|
xce back to emulation mode.
|
|
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|
|
LONGA OFF
|
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|
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|
|
pla condition z-flag with value on stack.
|
|
|
|
|
|
bne L6231 then done.
|
|
|
|
|
|
ldx inbuf get length of pathname.
|
|
|
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|
|
lda #$2F look for slash.
|
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|
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|
|
L621B cmp inbuf,x
|
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|
|
beq L6225 when found, set prefix.
|
|
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|
|
dex
|
|
|
|
|
|
bne L621B
|
|
|
|
|
|
bra L6231 if no slash, just skip it.
|
|
|
|
|
|
L6225 dex don't include trailing slash.
|
|
|
|
|
|
stx inbuf set new length.
|
|
|
|
|
|
jsr MLI set the P8 prefix.
|
2019-05-07 11:18:47 +00:00
|
|
|
|
.DA #$C6'
|
|
|
|
|
|
.DA pfxparms'
|
2019-04-29 20:36:58 +00:00
|
|
|
|
lda #$00 set z-flag
|
|
|
|
|
|
L6231 rts and go launch the app.
|
|
|
|
|
|
|
|
|
|
|
|
* check for disk volume
|
|
|
|
|
|
*
|
|
|
|
|
|
* on exit:
|
|
|
|
|
|
* carry clear = disk was found
|
|
|
|
|
|
* carry set = disk not found
|
|
|
|
|
|
|
|
|
|
|
|
ckfordrv .EQ *-ofsQ
|
|
|
|
|
|
clc native mode
|
|
|
|
|
|
xce
|
|
|
|
|
|
LONG I 16-bit regs, 8-bit acc.
|
|
|
|
|
|
ldx #sysentry+6 point to pathname buffer.
|
|
|
|
|
|
jsr copyvol copy volume name to pathname buffer.
|
|
|
|
|
|
L623C sec emulation mode.
|
|
|
|
|
|
xce
|
|
|
|
|
|
jsr MLI get info on the volume.
|
2019-05-07 11:18:47 +00:00
|
|
|
|
.DA #$C4'
|
|
|
|
|
|
.DA gfiparms'
|
2019-04-29 20:36:58 +00:00
|
|
|
|
bcc L6252 branch if volume found,
|
|
|
|
|
|
clc (native mode)
|
|
|
|
|
|
xce
|
|
|
|
|
|
LONG I,M
|
|
|
|
|
|
jsr mountvol else ask user to mount the volume.
|
|
|
|
|
|
bcc L623C if <return> pressed, then try again.
|
|
|
|
|
|
sec emulation mode.
|
|
|
|
|
|
xce
|
|
|
|
|
|
sec disk not found.
|
|
|
|
|
|
L6252 rts
|
|
|
|
|
|
|
|
|
|
|
|
* Prodos 8 parameter lists
|
|
|
|
|
|
|
|
|
|
|
|
pfxparms .EQ *-ofsQ set prefix parms.
|
2019-05-07 11:18:47 +00:00
|
|
|
|
.DA #01' one parm.
|
2019-04-29 20:36:58 +00:00
|
|
|
|
dc i2'inbuf' address of prefix.
|
|
|
|
|
|
opnparms .EQ *-ofsQ open parms.
|
|
|
|
|
|
dc h'03' 3 parms.
|
|
|
|
|
|
dc i2'PrefixBuf' pathname
|
|
|
|
|
|
dc i2'op_buf' i/o buffer
|
|
|
|
|
|
oprefnum .EQ *-ofsQ
|
|
|
|
|
|
dc h'00' reference #
|
|
|
|
|
|
eofparms .EQ *-ofsQ
|
2019-05-07 11:18:47 +00:00
|
|
|
|
.DA #02' 2 parms
|
2019-04-29 20:36:58 +00:00
|
|
|
|
eofrefn .EQ *-ofsQ
|
|
|
|
|
|
dc h'00' reference #
|
|
|
|
|
|
eofval .EQ *-ofsQ
|
|
|
|
|
|
dc h'000000' 3 byte eof value
|
|
|
|
|
|
readparm .EQ *-ofsQ
|
2019-05-07 11:18:47 +00:00
|
|
|
|
.DA #04' 4 parms
|
2019-04-29 20:36:58 +00:00
|
|
|
|
rdrefnum .EQ *-ofsQ
|
|
|
|
|
|
dc h'00' reference #
|
|
|
|
|
|
dc i2'sysentry' read into $2000 (bank 0).
|
|
|
|
|
|
rdcount .EQ *-ofsQ
|
|
|
|
|
|
dc h'0000' # of bytes to read.
|
|
|
|
|
|
dc h'0000' transfer count
|
|
|
|
|
|
closeprm .EQ *-ofsQ
|
|
|
|
|
|
dc h'01' 1 parm
|
|
|
|
|
|
closeref .EQ *-ofsQ
|
|
|
|
|
|
dc h'00' reference #
|
|
|
|
|
|
quitparms .EQ *-ofsQ
|
2019-05-07 11:18:47 +00:00
|
|
|
|
.DA #04' 4 parms.
|
2019-04-29 20:36:58 +00:00
|
|
|
|
dc h'00' quit back to launcher (GQuit)
|
|
|
|
|
|
dc h'0000'
|
|
|
|
|
|
dc h'00'
|
|
|
|
|
|
dc h'0000'
|
|
|
|
|
|
gfiparms .EQ *-ofsQ get file info parms.
|
2019-05-07 11:18:47 +00:00
|
|
|
|
.DA #0A' 10 parms
|
2019-04-29 20:36:58 +00:00
|
|
|
|
dc i2'volbuf' volume buffer
|
|
|
|
|
|
dc h'00' access
|
|
|
|
|
|
dc h'00' file type
|
|
|
|
|
|
dc h'0000' aux type
|
|
|
|
|
|
dc h'00' storage type
|
|
|
|
|
|
dc h'0000' blocks used
|
2019-05-07 11:18:47 +00:00
|
|
|
|
.DA #0000' modification date
|
2019-04-29 20:36:58 +00:00
|
|
|
|
dc h'0000' modification time
|
|
|
|
|
|
dc h'0000' creation date
|
2019-05-07 11:18:47 +00:00
|
|
|
|
.DA #0000' creation time
|
2019-04-29 20:36:58 +00:00
|
|
|
|
|
|
|
|
|
|
* messages for P8 fatal error. maximum length of message is 35 characters.
|
|
|
|
|
|
* the error code will be displayed immediately after the final character.
|
|
|
|
|
|
|
|
|
|
|
|
quitstr1 .EQ *-ofsQ
|
|
|
|
|
|
dc h'1B'
|
|
|
|
|
|
dc c'Can''t run next application.'
|
|
|
|
|
|
quitstr2 .EQ *-ofsQ
|
|
|
|
|
|
dc h'14'
|
|
|
|
|
|
dc c'ProDOS Error = $'
|
|
|
|
|
|
errval .EQ *-ofsQ hex error code gets stored here
|
|
|
|
|
|
dc c' '
|
|
|
|
|
|
quitbtn2 .EQ *-ofsQ null string (no 2nd button)
|
|
|
|
|
|
dc h'00'
|
|
|
|
|
|
|
|
|
|
|
|
* messages for P8 mount volume. maximum length of message is 35 characters.
|
|
|
|
|
|
* the button labels must not be more than 16 characters.
|
|
|
|
|
|
|
|
|
|
|
|
mountmsg .EQ *-ofsQ
|
|
|
|
|
|
dc h'17'
|
|
|
|
|
|
dc c'Please insert the disk:'
|
|
|
|
|
|
button1 .EQ *-ofsQ
|
|
|
|
|
|
dc h'0D'
|
|
|
|
|
|
dc c'Accept: '
|
2019-05-07 11:18:47 +00:00
|
|
|
|
.DA #1B' mousetext on
|
2019-04-29 20:36:58 +00:00
|
|
|
|
dc h'0F' inverse on
|
|
|
|
|
|
dc h'4D' mousetext return
|
|
|
|
|
|
dc h'0E' normal on
|
|
|
|
|
|
dc h'18' mousetext off
|
|
|
|
|
|
button2 .EQ *-ofsQ
|
|
|
|
|
|
dc h'0B'
|
|
|
|
|
|
dc c'Cancel: Esc'
|
|
|
|
|
|
|
|
|
|
|
|
* end of obj sel_2 (must be < GQdisp+$300)
|
|
|
|
|
|
*--------------------------------------
|
|
|
|
|
|
MAN
|
2019-07-08 12:56:54 +00:00
|
|
|
|
SAVE USR/SRC/PRODOS.203/PRODOS.S.SEL2
|
|
|
|
|
|
LOAD USR/SRC/PRODOS.203/PRODOS.S
|
2019-04-29 20:36:58 +00:00
|
|
|
|
ASM
|
