Incorrect trigger position using original SUMP logic

[jawi]

When i used the OLS, with original sump logic:

Recording Size 128K, Trigger ratio 50/50, worked correctly. Recording Size 256K, Trigger ratio 50/50, worked incorrectly, there was no pretrigger data showed. I captured the wrong command using LA.

128K, Trigger ratio 50/50, Set Read & Delay Count command was 0x81 0xFF 0x7F 0x00 0x40, while 256K, Trigger ratio 50/50, Set Read & Delay Count command was 0x81 0xFF 0xFF 0xFF 0xFF, it should be 0x81 0xFF 0xFF 0xFF 0x7F.

(reported by alexli)