SERVICE MODE
Voici quelques adresses intéressantes à connaître pour visiter les entrailles de votre Lisa préféré.
$180-183 : Power-up status (x0000000 = ok) 
$184-185 : Memory sizing error results 
$186-1A5 : Results of memory read/write tests 
$1A6-1A9 : Parity error memory address (if error during mem test) 
$1AA-1AB : Memory error address latch 
$1AC-1AF : D7 save on exception errors 
$1B0-1B1 : Results of MMU tests (context/data bits) 
$1B2     : Keyboard ID (00 = no ID received) 
$1B3     : Boot device ID 
$1B4-1B9 : Boot failure data 
$1BA-1BF : Clock setting (Ey,dd,dh,hm,ms,st) 
$1C0-1DF : Data reg save area (D0 - D7) 
$1E0-1FF : Address reg save area (A0 - A7, A7 = USP) 
$240-260 : System serial # 
$260-267 : Scratch area 
$268-26B : Suspected (logical) memory error address for parity error 
$26C-26F : Save of data written to suspected error address 
$270-273 : Actual (logical) error address found during search 
$274-277 : Save of data read during parity error search 
$278-27B : (Physical) error address read from parity error address latch 
$27C     : Error row for parity chip failure (0 = first row, 7 = last row) 
$27D     : Error column for parity chip failure (9 or 14) 
$280-293 : Exception data save area (FC/EXCADR/IR/SR/PC/EXCTYPE/SSP) 
            44 = NMI or other interrupt 
            45 = bus error 
            46 = address error 
            47 = other exception/interrupt 
            48 = illegal instruction error 
            49 = line 1010 or 1111 trap 
            50 = bus error accessing keyboard VIA 
            51 = bus error accessing parallel port VIA 
            57 = bus error accessing disk controller 
$294-297 : Maximum physical memory address + 1 
$298-299 : I/O slot 1 card id (0 = no card present) 
$29A-29B : I/O slot 2 card id 
$29C-29D : I/O slot 3 card id 
$2A1     : Disk ROM id 
$2A4-2A7 : Minimum physical address 
$2A8-2AB : Total memory (Max-Min) 
$2AC     : SCC test results 
$2AD     : Slot # of memory board if memory error 
$2AE     : Result of disk controller self-test 
$2AF     : System type 
           0 = Lisa 1 
           1 = Lisa 2 
           2 = Lisa 2 with external hard disk 
           3 = Lisa 2 with internal hard disk 
$2B0-2BF : Keyboard queue (16 bytes) 
$2C0-480 : ROM scratchpad/stack area