I disassembled it myself:

Can anyone comment on what is going on here?

What is at $DE00

Rich

disassembly of PRODOS system global page locations
$BFA0 - BFCF

ASOFTCOLD      EQU $E000      ;
LCSTART        EQU $D000      ;THIS IS START OF PRODOS KERNEL

READROM        EQU $C082      :READ LC ROM (APPLESOFT)
LCRAM          EQU $C083      ;READ LC RAM (PRODOS KERNEL)
LCBANK1        EQU C08B       ;LC RAM bank1, Read RAM
                              ;two or more successive reads WR-enables
RAM

                              ;PRODOS TECH REF 8-7
MLIACTV        EQU $BF9B      ;MLI ACTIVE FLAG 1=ACTIVE

                              ;PRODOS TECH REF 8-8
BNKBYT1        EQU BFF4       ;STORAGE FOR BYTE AT $E000
BNKBYT2        EQU BFF5       ;STORAGE FOR BYTE AT $D000




BFA0:          EOR ASOFTCOLD  ;$E000 APPLESOFT COLDSTART
BFA3:          BEQ BRANCH1    ;BFAA
BFA5:          STA READROM    ;C082 = READ ASOFT ROM
BFA8:          BNE BRANCH2    ;BFB5
BFAA: BRANCH1  LDA BNKBYT2    ;BFF5   TECH REF PG 8-8
BFAD:          EOR LCSTART    ;$D000
BFB0:          BEQ BRANCH2    ;BFB5
BFB2:          LDA LCRAM      ;C083
BFB5: BRANCH2  PLA
BFB6:          RTI
BFB7:          SEC
BFB8:          ROR MLIACTV    ;BF9B
BFBB:          LDA ASOFTCOLD  ;$E000
BFBE:          STA BNKBYT1    ;BFF4
BFC1:          LDA LCSTART    ;$D000
BFC4:          STA BNKBYT2    ;BFF5
BFC7:          LDA LCBANK1    ;SWITCH TO LC ram BANK1
BFCA:          LDA LCBANK1    ;AND ENABLE WRITE 
BFCD:          JMP DEOO




oops.  I got the references reversed.  I got the labels
and information from Beneath Prodos.

Rich