The 4 SIMM sockets can accommodate from 8 to 128 MB of RAM.                                             
                                                                                                          

  Supported SIMM sizes are 4, 8, 16 and 32 MB rated at 70 ns or better.                                   
                                                                                                          

  SIMMs are 32-bit, nonparity.                                                                            
                                                                                                          

  SIMMs must be installed in matched pairs.                                                               
                                                                                                          

  SIMM socket pairs must be filled in this order: J3J1 and J3H1; J3G1 and J3F1.                           
                                                                                                          

  The number and arrangement of chips on the SIMMs may vary.                                              
                                                                                                          

  The SIMMs used on this system have tin leads.                                                           
                                                                                                          

Base/Board Memory

Total       J3J1         J3H1         J3G1         J3F1         
                                                                

8 MB        4 MB         4 MB                                   
                                                                

16 MB       4 MB         4 MB         4 MB         4 MB         
                                                                

16 MB       8 MB         8 MB                                   
                                                                

24 MB       8 MB         8 MB         4 MB         4 MB         
                                                                

32 MB       8 MB         8 MB         8 MB         8 MB         
                                                                

32 MB       16 MB        16 MB                                  
                                                                

40 MB       16 MB        16 MB        4 MB         4 MB         
                                                                

48 MB       16 MB        16 MB        8 MB         8 MB         
                                                                

64 MB       16 MB        16 MB        16 MB        16 MB        
                                                                

64 MB       32 MB        32 MB                                  
                                                                

80 MB       32 MB        32 MB        8 MB         8 MB         
                                                                

96 MB       32 MB        32 MB        16 MB        16 MB        
                                                                

128 MB      32 MB        32 MB        32 MB        32 MB        
                                                                

1. Remove the cover.                                                                                       
                                                                                                           

2. While pushing outward on each of the SIMM socket's metal tabs, rotate the SIMM upward until it is       
   released from its socket.                                                                                
                                                                                                           

3. To replace or reinstall a SIMM, align the SIMM with the slot in the center of the socket with the cutout 
   toward the back of the chassis and press slowly upward until it snaps into place.                        
                                                                                                           

Upper Memory Map

Location                      Size          Description                     
                                                                            

FFFF0000-FFFFFFFF             64 KB         BIOS ROM                       
                                                                           

08000000-FFFEFFFF                           Reserved                       
                                                                           

0010FFF0-07FFFFFF             126.9 MB      Extended memory                
                                                                           

00100000-0010FFEF             64 KB         High memory area               
                                                                           

000F0000-000FFFFF             64 KB         System BIOS                    
                                                                           

000C8000-000EFFFF             160 KB        Available                      
                                                                           

000C0000-000C7FFF             32 KB         Video BIOS                     
                                                                           

000A0000-000BFFFF             128 KB        Video RAM                      
                                                                           

0009FC00-0009FFFF             1 KB          PS/2 mouse data area           
                                                                           

00000000-0009FBFF             639 KB        Conventional memory            
                                                                           

Conventional Memory Map

Segment       Address Range           Use                         
                                                                  

0             00000h-003FFh           Interrupt vector table     
                                                                 

              00400h-004FFh           BIOS data area             
                                                                 

              00500h-005FFh           MS-DOSŪ work area          
                                                                 

              00600h-0FFFFh           User memory                
                                                                 

1             10000h-1FFFFh           User memory                
                                                                 

2             20000h-2FFFFh           User memory                
                                                                 

3             30000h-3FFFFh           User memory                
                                                                 

4             40000h-4FFFFh           User memory                
                                                                 

5             50000h-5FFFFh           User memory                
                                                                 

6             60000h-6FFFFh           User memory                
                                                                 

7             70000h-7FFFFh           User memory                
                                                                 

8             80000h-8FFFFh           User memory                
                                                                 

9             90000h-9FBFFh           User memory                
                                                                 

              9FC00h-9FFFFh           PS/2 mouse data area