Automated Self Test

When you enter the self-test, the game automatically tests the program ROM and RAM, the video RAM, the color RAM, the MSP (Math Systems Processor) RAM, the DS III PCB, the DSPCOM PCB, and the SAIIS (sound) PCB.


If you do not see anything on the video display screen, you may have a video display problem or a game system problem. See the DIP Switches section at the end of this chapter to diagnose the problem.

The automated testing takes about five minutes. The results appear on the screen. Messages in red alert you to a problem. You can run further testing from the Test menu.

If you do not want to wait for the systems and PCBs to be tested, you can skip these tests by pressing the zoom button while in the program ROM and RAM screen, Figure 2-1. (If the self-test proceeds beyond this screen, it will run its course.) If you want to exit to the attract mode, just turn the self-test switch off.

Program ROM and RAM Test

When you enter self-test, the game tests the program ROM and RAM. The screen in Figure 2-1 shows the results of a program ROM and RAM test. The top of the screen shows the ROM test result. The numbers on the left and the letters on the top of the screen show the locations of the ROMs on the Multisync PCB. If a white box appears, then the ROM there is good. If an empty box appears (as shown at 200U and 210U), then the ROM there is bad. If nothing appears, then nothing was tested there.

This screen disappears after a few seconds and the self-test continues. However, the screen with the results of the complete self-test, shown in Figure 2-2, shows the message Bad Program ROM (or Bad Program RAM) if it found an error in the program ROMs or RAMs.

Microprocessor and Board Tests

After checking the program RAM and ROM, the automated self-test checks the game's microprocessor and PC boards. It tests the video RAM and color RAM in the GSP (Graphic Systems Processor) microprocessor system, the MSP RAM, the DS III board, the DSPCOM board, and the sound board. The test takes four to five minutes. You see the screen in Figure 2-2 when the test is completed.

If the system or board is good, OK follows the test name. If it is bad, the word Bad precedes the name of the board or system (except for the DS III board test, which gives more information). If you have a bad system or board, then choose Special Functions from the Test menu, choose the appropriate system or board tests from the Special Functions menu, and read the description of the tests in this chapter. Here is a brief description of each microprocessor and board test performed during the automated self-test. PROGRAM ROM: Described above. PROGRAM RAM: Described above. GSP VRAM: Uses the Simple GSP VRAM Test. (De



scribed in the section Multisync Board GSP Tests.) GSP COLOR RAM: Uses the GSP Color RAM Test. (Described in the section Multisync Board GSP Tests.) MSP DRAM: Tests the RAM for the MSP. Most of the error messages are self-explanatory. SA n Test: Tests the SAIIS sound board program ROM, RAM, and the sound board communications (SCOM).

Was this article helpful?

0 0

Post a comment