Topic : Pure Assembler Documentation Author : John Kormylo Version : PASM.HYP 1.0 Subject : Documentation/Pure Assembler Nodes : 740 Index Size : 20262 HCP-Version : 3 Compiled on : Atari @charset : atarist @lang : en @default : @help : Help @options : +g -i -s +x +z -t4 @width : 75 View Ref-File[ _hz_200 ] _hz_200 = $4BA ;L data BIOS 200 Hz system clock count Incremented by ST MFP Timer C interrupts 200 times a second. All I/O drivers should use it for timeout tests. etv_timer is called when (_hz_200 & 3 == 0).