************************************************************************ ************************************************************************ ** ** ** Application notes for memory devices larger than 4MBytes. ** ** This application note explains naming conventions and data file ** ** download issues. ** ** ** ************************************************************************ ************************************************************************ ************************************************************************ * 8MBytes devices mapped into two User RAM memory partitions ----------------------------------------------------------- Due to User RAM limitations on the Unisystem programmers a 64Mbit device must be split into 2 equal 32Mbit Quadrants: Unisystem RAM mapping: Device mapping: --------------- 0Mbit ---------------------- 0Mbit | 0 hex | | Quadrant 1 | | |- mapped here ---> | 0-1FFFFF hex | | |- Or -- | | | | | | | | | | | | | 200000 hex | | |----------------------| 32Mbit --------------- 32Mbit | | | | | | `- here --> | 200000->3FFFFF hex | | | |----------------------| 64Mbit For for a device that requires a two quadrant device menu selection: Quadrant 1 = Device addresses 0 -> 1FFFFF hex Quadrant 2 = Device addresses 200000 -> 3FFFFF hex I/O addr Memory begin User data Device addr Menu selection: offset: address: size: range: Quadrant 1 = L: 0 hex 0 hex 200000 hex 0 -> 1FFFFF hex Quadrant 2 = U: 400000 hex 0 hex 200000 hex 200000 -> 3FFFFF hex NOTE: For an 8-Bit device the User Data Sizes and Device Address Ranges would need to be doubled. ************************************************************************ * 12MBytes devices mapped into two User RAM memory partitions -------------------------------------------------------------- For a device that requires a three quadrant menu selection: suffix A0 = The Quadrant of the 64Mbit device that has Device addresses 0 -> 1FFFFF hex suffix A1 = The Quadrant of the 64Mbit device that has Device addresses 200000 -> 3FFFFF hex suffix A2 = The Quadrant of the 32Mbit device that has Device addresses 0 -> 1FFFFF hex ************************************************************************ * 16MBytes devices mapped into two User RAM memory partitions -------------------------------------------------------------- Due to ram limitations on the Unisystem programmers, this device had to be split into 4 equal 32Mbit quadrants. Make menu selections as: suffix A0 to program the first Quadrant suffix A1 to program the second Quadrant suffix A2 to program the third Quadrant suffix A3 to program the fourth Quadrant To load data from a data file for a particular Quadrant of the device you must set the download options as shown in the table below. The memory size of each Quadrant corresponds to a 128Mbit device. I/O addr Memory begin User data Device address Menu selection: offset: address: size: range: Quadrant A0: 0 hex 0 hex 200000 hex 0 -> 1FFFFF hex Quadrant A1: 400000 hex 0 hex 200000 hex 200000 -> 3FFFFF hex Quadrant A2: 800000 hex 0 hex 200000 hex 400000 -> 5FFFFF hex Quadrant A3: C00000 hex 0 hex 200000 hex 600000 -> 7FFFFF hex NOTE: For an 8-Bit device the User Data Sizes and Device Address Ranges would need to be doubled. ------------------------------------------------------------------------ ------------------------------------------------------------------------ Example of downloading a data files to various partitions: ------------------------------------------------------------------------ ------------------------------------------------------------------------ NOTE: Quadrant L = The Quadrant of the 64Mbit device that has Device addresses 0 -> 1FFFFF hex (0 -> 3FFFFF for 8 bit devices) Quadrant A1 = The Quadrant of the 128Mbit device that has Device addresses 200000 -> 3FFFFF hex (400000 -> 7FFFFF for 8 bit devices) The following example would be in regard to loading data into the programmer memory map from a datafile, and the data is intended to be programmed into either Quadrant L or Quadrant A1: I/O Translation Format 99 I/O addr offset 400000 Memory begin address 0 User data size 200000 (400000 for 8 bit devices) Example of editing device data in the memory editor: If data editing needs to done in the user RAM memory editor the appropriate Quadrant Menu Selection (see table above) must first be determined. As an example if editing data at the device address starting at location 2F8000 hex, that device address location would fall into the Quadrant U or Quadrant A1. To find where location 2F8000 hex corresponds to location in the Quadrant U or Quadrant A1 subtract the beginning device address range from the location you want to edit. In this case the location of device address location 2F8000 hex is in the Quadrant U or Quadrant A1 memory address is F8000 hex (F8000 hex = 2F8000 hex - 200000 hex). ************************************************************************ **************** ADDITIONAL NOTES FOR SPECIFIC DEVICES ***************** ************************************************************************ TOS 58FVB641FT : --------------- Sector ERASE operations may be performed within the selected quadrant and the desired sectors. However the "Protect/Unprotect all sectors" prior to the erase operation is performed ONLY within the lower quadrant algorithm. Due to this, it is necessary to erase/program the lower quadrant first prior to erasing the upper quadrant. This is ONLY needed when any sector within the upper quadrant is previously protected. *------ SecSi Sector Data -----------* SecSi Sector is not supported currently for these devices. ************************************************************************