[An assembly program for a personal computer to receive data from a multi-channel pulse height analyzer via RS-232C].

A short assembly program for the PC-9801 series personal computer (NEC Corporation) has been written to receive and write the 4096 or less channel data from the S35 plus and S40 MCA (Canberra Industries Inc.) to a floppy disk. The operating system is the MS-DOS version 3.10. The data are transferred via RS-232C, and the each byte of data is received by MS-DOS BIOS call. The source list of the program is shown, and the procedures to obtain the executable code from the source list and to use the data on disks in a N83 BASIC program are explained. By using the program, it takes about 22 s to transfer a whole of 4096 channel data with the transfer rate of 9600 baud.