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Z86L7103ZEM Datasheet(PDF) 4 Page - Zilog, Inc. |
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Z86L7103ZEM Datasheet(HTML) 4 Page - Zilog, Inc. |
4 / 7 page In-Circuit Emulator-L71 Zilog 4 CP97LVO2100 LIMITATIONS 1. Switching ICEBOX™ emulators without quitting the GUI is not supported and may cause unexpected results. 2. The maximum loadable symbols is 32,768, provided there is enough system resource (memory). 3. Although GUI 3.00 and later support baud rates up to 57.6K baud, the actual maximum usable rate may be less due to limitations of the user’s hardware or system software setup. The maximum usable rate is determined by the user’s tolerance of the frequency of communication errors. 4. Do not put a breakpoint at addresses after STOP instruction. This will cause the program counter to continue at that location after a Stop-Mode Recovery. 5. Single-stepping into the Halt instruction will cause an ICEBOX “Fatal Error” message to be displayed on the screen. The ICE chip must be reset, either by /Reset pin on the target board or by resetting the whole ICEBOX by pressing the emulator MASTER RESET button at the back of the emulator. 6. Clicking on the HALT button does not always halt the ICEBOX execution. If the application goes into Stop Mode or Halt Mode, the only way to halt the emulator execution is by doing a Stop-Mode Recovery (as defined by the user program). You may also reset the application using the emulator MASTER RESET button; however, this will reset the whole ICEBOX. 7. RC oscillator emulation is not supported. 8. Since the emulator uses the Z86C50 ICE chip, Port 1 cannot be configured to Low EMI mode. Bit 4 in PCON registers must be set to logic “1”. Note: This is not a problem with the actual emulated device. 9. When the software enters a STOP mode and the HALT control button in the GUI software is pressed, any SMR source on the application board is activated. The emulator will then jump back to address 000C, which is normal. But when continuing the program with a GO command from 000C, a POR reset is performed, resetting all control registers. A workaround is to do a JUMP 000D and execute with GO. This will not issue a POR reset. 10. Port 1 can only be written. The data in Port 1 cannot be read from Port1 directly, but it can be read from Register %03 in Expanded Register Group D. 11. The L71 ICEBOX uses the Z86C50 ICE Chip; therefore, emulation at more than 12 MHz requires that the Expanded Register file timing of the ICE Chip be slowed to SCLK x 2. This is accomplished by loading value %01 to ICECON Register (Bank F, Register A) of the ICE Chip. Example: PRECAUTIONS ALL Devices 1. GUI software versions prior to 3.00 are incompatible with hardware containing BOOTROM 3.00. The GUI software may still boot, but will fail at some later point. 2. For some 386 PCs, a baud rate of 19.2K or less is necessary because the Windows' communication driver does not guarantee “reliable” operation above 9600 baud. On some slower 386 machines, selecting a high baud rate might crash the Windows' environment or result in excessive communication errors. 3. When simultaneously running two different GUI versions on two different Communication Ports, the former executed version is used for both emulators. This is a Windows Operating System bug. 4. The emulator cannot be operated while performing ESD/EMI testing on the target board. 5. Executing GUI. The GUI will occasionally continue to indicate “Executing” after a Halt instruction. Pushing the GO button will then result in Executing. (Executing showing at the top of the screen.) 6. Ensure that the target cable is correctly aligned (pin-1 to pin-1) before inserting into the target system. Incorrect alignment may damage the emulator and/or the target system. 7. All Z8 control registers are Write-Only unless stated otherwise. PUSH RP LD RP,#%0F LD %A,#%01 POP RP |
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