diff --git a/okemu.log b/okemu.log
index df5fd91..cd3267d 100644
--- a/okemu.log
+++ b/okemu.log
@@ -1,3 +1,250 @@
 2026-04-02T14:27:10[I][zrcp.go:117]: Ready for debugger connections on localhost:10001
 2026-04-02T14:29:15[I][zrcp.go:117]: Ready for debugger connections on localhost:10001
 2026-04-02T14:30:16[I][zrcp.go:117]: Ready for debugger connections on localhost:10001
+2026-04-02T14:44:53[D][fdc.go:427]: Load Floppy content from file floppy/floppyB.okd.
+2026-04-02T14:44:53[I][zrcp.go:117]: Ready for debugger connections on localhost:10001
+2026-04-02T14:44:54[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.055ms
+2026-04-02T14:44:55[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.976ms
+2026-04-02T14:44:56[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.026ms
+2026-04-02T14:44:57[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.987ms
+2026-04-02T14:44:58[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.987ms
+2026-04-02T14:44:59[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.024ms
+2026-04-02T14:45:00[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.994ms
+2026-04-02T14:45:01[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.004ms
+2026-04-02T14:45:02[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.934ms
+2026-04-02T14:45:03[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.026ms
+2026-04-02T14:45:04[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.979ms
+2026-04-02T14:45:05[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.030ms
+2026-04-02T14:45:06[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.007ms
+2026-04-02T14:45:07[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.962ms
+2026-04-02T14:45:08[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.995ms
+2026-04-02T14:45:09[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.027ms
+2026-04-02T14:45:10[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.964ms
+2026-04-02T14:45:11[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.018ms
+2026-04-02T14:45:12[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.008ms
+2026-04-02T14:45:13[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.933ms
+2026-04-02T14:45:14[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.015ms
+2026-04-02T14:45:15[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.015ms
+2026-04-02T14:45:16[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.988ms
+2026-04-02T14:45:17[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.029ms
+2026-04-02T14:45:18[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.931ms
+2026-04-02T14:45:19[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.038ms
+2026-04-02T14:45:20[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.971ms
+2026-04-02T14:45:21[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.997ms
+2026-04-02T14:45:22[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.037ms
+2026-04-02T14:45:23[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.956ms
+2026-04-02T14:45:24[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.989ms
+2026-04-02T14:45:25[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.995ms
+2026-04-02T14:45:26[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.004ms
+2026-04-02T14:45:27[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.044ms
+2026-04-02T14:45:28[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.940ms
+2026-04-02T14:45:29[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.000ms
+2026-04-02T14:45:30[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.010ms
+2026-04-02T14:45:31[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.976ms
+2026-04-02T14:45:32[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.879ms
+2026-04-02T14:45:33[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.023ms
+2026-04-02T14:45:34[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.000ms
+2026-04-02T14:45:35[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.052ms
+2026-04-02T14:45:36[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.925ms
+2026-04-02T14:45:37[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.016ms
+2026-04-02T14:45:38[D][main.go:125]: Cpu clk period: 306, Timer clock period: 430, frame time: 19.983ms
+2026-04-02T14:45:39[D][main.go:125]: Cpu clk period: 306, Timer clock period: 430, frame time: 19.983ms
+2026-04-02T14:45:40[D][main.go:125]: Cpu clk period: 306, Timer clock period: 430, frame time: 20.015ms
+2026-04-02T14:45:41[D][main.go:125]: Cpu clk period: 306, Timer clock period: 430, frame time: 20.013ms
+2026-04-02T14:45:42[D][main.go:125]: Cpu clk period: 306, Timer clock period: 430, frame time: 19.953ms
+2026-04-02T14:45:43[D][main.go:125]: Cpu clk period: 306, Timer clock period: 430, frame time: 19.994ms
+2026-04-02T14:45:44[D][main.go:125]: Cpu clk period: 306, Timer clock period: 430, frame time: 20.001ms
+2026-04-02T14:45:45[D][main.go:125]: Cpu clk period: 306, Timer clock period: 430, frame time: 19.990ms
+2026-04-02T14:45:46[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.996ms
+2026-04-02T14:45:47[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.990ms
+2026-04-02T14:45:48[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.979ms
+2026-04-02T14:45:49[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.012ms
+2026-04-02T14:45:50[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.991ms
+2026-04-02T14:45:51[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.995ms
+2026-04-02T14:45:52[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.002ms
+2026-04-02T14:45:53[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.998ms
+2026-04-02T14:45:54[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.994ms
+2026-04-02T14:45:55[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.975ms
+2026-04-02T14:45:56[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.007ms
+2026-04-02T14:45:57[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.016ms
+2026-04-02T14:45:58[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.966ms
+2026-04-02T14:45:59[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.019ms
+2026-04-02T14:46:00[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.004ms
+2026-04-02T14:46:01[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.003ms
+2026-04-02T14:46:02[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.975ms
+2026-04-02T14:46:03[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.998ms
+2026-04-02T14:46:04[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.994ms
+2026-04-02T14:46:05[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.006ms
+2026-04-02T14:46:06[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.984ms
+2026-04-02T14:46:07[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.016ms
+2026-04-02T14:46:08[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.982ms
+2026-04-02T14:46:09[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.981ms
+2026-04-02T14:46:10[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.012ms
+2026-04-02T14:46:11[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.992ms
+2026-04-02T14:46:12[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.005ms
+2026-04-02T14:46:13[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.981ms
+2026-04-02T14:46:14[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.998ms
+2026-04-02T14:46:15[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.939ms
+2026-04-02T14:46:16[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.061ms
+2026-04-02T14:46:17[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.980ms
+2026-04-02T14:46:18[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.006ms
+2026-04-02T14:46:19[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.014ms
+2026-04-02T14:46:20[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.975ms
+2026-04-02T14:46:21[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.983ms
+2026-04-02T14:46:22[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.040ms
+2026-04-02T14:46:23[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.965ms
+2026-04-02T14:46:24[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.992ms
+2026-04-02T14:46:25[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 19.976ms
+2026-04-02T14:46:26[D][main.go:125]: Cpu clk period: 308, Timer clock period: 430, frame time: 20.048ms
+2026-04-02T14:46:27[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.961ms
+2026-04-02T14:46:28[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.998ms
+2026-04-02T14:46:29[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.015ms
+2026-04-02T14:46:30[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.976ms
+2026-04-02T14:46:31[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.003ms
+2026-04-02T14:46:32[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.045ms
+2026-04-02T14:46:33[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 19.954ms
+2026-04-02T14:46:34[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 19.988ms
+2026-04-02T14:46:35[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 20.009ms
+2026-04-02T14:46:36[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 19.967ms
+2026-04-02T14:46:37[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 19.997ms
+2026-04-02T14:46:38[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 20.040ms
+2026-04-02T14:46:39[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 19.942ms
+2026-04-02T14:46:40[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 20.003ms
+2026-04-02T14:46:41[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 20.002ms
+2026-04-02T14:46:42[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 20.020ms
+2026-04-02T14:46:43[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 19.953ms
+2026-04-02T14:46:44[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 19.987ms
+2026-04-02T14:46:45[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 20.016ms
+2026-04-02T14:46:46[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 20.002ms
+2026-04-02T14:46:47[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 20.011ms
+2026-04-02T14:46:48[D][main.go:125]: Cpu clk period: 303, Timer clock period: 430, frame time: 19.981ms
+2026-04-02T14:46:49[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.032ms
+2026-04-02T14:46:50[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.929ms
+2026-04-02T14:46:51[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.022ms
+2026-04-02T14:46:52[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.999ms
+2026-04-02T14:46:53[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.002ms
+2026-04-02T14:46:54[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.005ms
+2026-04-02T14:46:55[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.979ms
+2026-04-02T14:46:56[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.000ms
+2026-04-02T14:46:57[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.972ms
+2026-04-02T14:46:58[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.995ms
+2026-04-02T14:46:59[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.038ms
+2026-04-02T14:47:00[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.972ms
+2026-04-02T14:47:01[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.991ms
+2026-04-02T14:47:02[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.998ms
+2026-04-02T14:47:03[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.008ms
+2026-04-02T14:47:04[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.981ms
+2026-04-02T14:47:05[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.013ms
+2026-04-02T14:47:06[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.981ms
+2026-04-02T14:47:07[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.992ms
+2026-04-02T14:47:08[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.007ms
+2026-04-02T14:47:09[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.990ms
+2026-04-02T14:47:10[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.995ms
+2026-04-02T14:47:11[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.975ms
+2026-04-02T14:47:12[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.037ms
+2026-04-02T14:47:13[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.991ms
+2026-04-02T14:47:14[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.925ms
+2026-04-02T14:47:15[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.075ms
+2026-04-02T14:47:16[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.949ms
+2026-04-02T14:47:17[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.025ms
+2026-04-02T14:47:18[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.963ms
+2026-04-02T14:47:19[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.057ms
+2026-04-02T14:47:20[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.955ms
+2026-04-02T14:47:21[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.006ms
+2026-04-02T14:47:22[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.982ms
+2026-04-02T14:47:23[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.997ms
+2026-04-02T14:47:24[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.992ms
+2026-04-02T14:47:25[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.016ms
+2026-04-02T14:47:26[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.977ms
+2026-04-02T14:47:27[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.987ms
+2026-04-02T14:47:28[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.008ms
+2026-04-02T14:47:29[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.985ms
+2026-04-02T14:47:30[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.982ms
+2026-04-02T14:47:31[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.038ms
+2026-04-02T14:47:32[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.979ms
+2026-04-02T14:47:33[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.993ms
+2026-04-02T14:47:34[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.035ms
+2026-04-02T14:47:35[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.949ms
+2026-04-02T14:47:36[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.980ms
+2026-04-02T14:47:37[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.993ms
+2026-04-02T14:47:38[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.038ms
+2026-04-02T14:47:39[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.947ms
+2026-04-02T14:47:40[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.998ms
+2026-04-02T14:47:41[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.998ms
+2026-04-02T14:47:42[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.018ms
+2026-04-02T14:47:43[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.989ms
+2026-04-02T14:47:44[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.015ms
+2026-04-02T14:47:45[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 19.962ms
+2026-04-02T14:47:46[D][main.go:125]: Cpu clk period: 305, Timer clock period: 430, frame time: 20.021ms
+2026-04-02T14:47:47[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.996ms
+2026-04-02T14:47:48[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.992ms
+2026-04-02T14:47:49[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.002ms
+2026-04-02T14:47:50[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.990ms
+2026-04-02T14:47:51[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.003ms
+2026-04-02T14:47:52[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.005ms
+2026-04-02T14:47:53[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.000ms
+2026-04-02T14:47:54[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.961ms
+2026-04-02T14:47:55[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 20.018ms
+2026-04-02T14:47:56[D][main.go:125]: Cpu clk period: 307, Timer clock period: 430, frame time: 19.992ms
+2026-04-02T14:47:57[D][main.go:125]: Cpu clk period: 309, Timer clock period: 430, frame time: 19.995ms
+2026-04-02T14:47:58[D][main.go:125]: Cpu clk period: 309, Timer clock period: 430, frame time: 19.999ms
+2026-04-02T14:47:59[D][main.go:125]: Cpu clk period: 309, Timer clock period: 430, frame time: 19.973ms
+2026-04-02T14:48:00[D][main.go:125]: Cpu clk period: 311, Timer clock period: 430, frame time: 20.005ms
+2026-04-02T14:48:01[D][main.go:125]: Cpu clk period: 311, Timer clock period: 430, frame time: 20.044ms
+2026-04-02T14:48:02[D][main.go:125]: Cpu clk period: 311, Timer clock period: 430, frame time: 19.957ms
+2026-04-02T14:48:03[D][main.go:125]: Cpu clk period: 311, Timer clock period: 430, frame time: 20.018ms
+2026-04-02T14:48:04[D][main.go:125]: Cpu clk period: 311, Timer clock period: 430, frame time: 19.975ms
+2026-04-02T14:48:05[D][main.go:125]: Cpu clk period: 311, Timer clock period: 430, frame time: 20.008ms
+2026-04-02T14:48:06[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 19.989ms
+2026-04-02T14:48:07[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 19.975ms
+2026-04-02T14:48:08[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 20.029ms
+2026-04-02T14:48:09[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 19.977ms
+2026-04-02T14:48:10[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 19.986ms
+2026-04-02T14:48:11[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 20.013ms
+2026-04-02T14:48:12[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 19.991ms
+2026-04-02T14:48:13[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 19.985ms
+2026-04-02T14:48:14[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 19.969ms
+2026-04-02T14:48:15[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 19.997ms
+2026-04-02T14:48:16[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 20.033ms
+2026-04-02T14:48:17[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 19.986ms
+2026-04-02T14:48:18[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 20.008ms
+2026-04-02T14:48:19[D][main.go:125]: Cpu clk period: 303, Timer clock period: 433, frame time: 19.975ms
+2026-04-02T14:48:20[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 20.006ms
+2026-04-02T14:48:21[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 19.969ms
+2026-04-02T14:48:22[D][main.go:125]: Cpu clk period: 307, Timer clock period: 433, frame time: 20.015ms
+2026-04-02T14:48:23[D][main.go:125]: Cpu clk period: 307, Timer clock period: 433, frame time: 19.992ms
+2026-04-02T14:48:24[D][main.go:125]: Cpu clk period: 307, Timer clock period: 433, frame time: 19.996ms
+2026-04-02T14:48:25[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 20.001ms
+2026-04-02T14:48:26[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 20.000ms
+2026-04-02T14:48:27[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 20.035ms
+2026-04-02T14:48:28[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 19.947ms
+2026-04-02T14:48:29[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 19.993ms
+2026-04-02T14:48:30[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 19.994ms
+2026-04-02T14:48:31[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 19.996ms
+2026-04-02T14:48:32[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 19.982ms
+2026-04-02T14:48:33[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 20.006ms
+2026-04-02T14:48:34[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 19.988ms
+2026-04-02T14:48:35[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 20.004ms
+2026-04-02T14:48:36[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 20.016ms
+2026-04-02T14:48:37[D][main.go:125]: Cpu clk period: 309, Timer clock period: 433, frame time: 19.957ms
+2026-04-02T14:48:38[D][main.go:125]: Cpu clk period: 304, Timer clock period: 433, frame time: 20.072ms
+2026-04-02T14:48:39[D][main.go:125]: Cpu clk period: 302, Timer clock period: 433, frame time: 19.953ms
+2026-04-02T14:48:40[D][main.go:125]: Cpu clk period: 302, Timer clock period: 433, frame time: 19.940ms
+2026-04-02T14:48:41[D][main.go:125]: Cpu clk period: 302, Timer clock period: 433, frame time: 20.003ms
+2026-04-02T14:48:42[D][main.go:125]: Cpu clk period: 302, Timer clock period: 433, frame time: 19.995ms
+2026-04-02T14:48:43[D][main.go:125]: Cpu clk period: 302, Timer clock period: 433, frame time: 19.995ms
+2026-04-02T14:48:44[D][main.go:125]: Cpu clk period: 302, Timer clock period: 433, frame time: 19.995ms
+2026-04-02T14:48:45[D][main.go:125]: Cpu clk period: 300, Timer clock period: 433, frame time: 19.988ms
+2026-04-02T14:48:46[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 19.987ms
+2026-04-02T14:48:47[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 20.012ms
+2026-04-02T14:48:48[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 20.001ms
+2026-04-02T14:48:49[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 19.990ms
+2026-04-02T14:48:50[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 20.002ms
+2026-04-02T14:48:51[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 19.991ms
+2026-04-02T14:48:52[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 20.007ms
+2026-04-02T14:48:53[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 19.984ms
+2026-04-02T14:48:54[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 20.031ms
+2026-04-02T14:48:55[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 19.957ms
+2026-04-02T14:48:56[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 19.999ms
+2026-04-02T14:48:57[D][main.go:125]: Cpu clk period: 305, Timer clock period: 433, frame time: 19.978ms
+2026-04-02T14:48:57[D][fdc.go:445]: Save Floppy to file floppy/floppyB.okd.
diff --git a/okemu.yml b/okemu.yml
index bc009d2..6ec7388 100644
--- a/okemu.yml
+++ b/okemu.yml
@@ -1,5 +1,5 @@
 logFile: okemu.log
-logLevel: info
+logLevel: debug
 monitorFile: rom/MON_r8_9c6c6546.mon
 cpmFile: rom/CPM_r8_bc0695e4.cpm
 fdc:
diff --git a/src/main.go b/src/main.go
index d2230f4..d9406be 100644
--- a/src/main.go
+++ b/src/main.go
@@ -23,14 +23,17 @@ import (
 	log "github.com/sirupsen/logrus"
 )
 
-var Version = "v1.0.1"
-var BuildTime = "2026-04-01"
+var Version = "v1.0.2"
+var BuildTime = "2026-04-02"
 
 const defaultTimerClkPeriod = 430
-const defaultCpuClkPeriod = 311
+const defaultCpuClkPeriod = 310
 
-const windowsTimerClkPeriod = 230
-const windowsCpuClkPeriod = 111
+const windowsTimerClkPeriod = 280
+const windowsCpuClkPeriod = 151
+
+const maxDelta = 8
+const diffScale = 80.0
 
 ////go:embed hex/m80.hex
 //var serialBytes []byte
@@ -157,11 +160,11 @@ func calcPeriod(curFreq float64, destFreq float64, hiLimit float64, loLimit floa
 
 // calcDelta  calculate step to change period
 func calcDelta(currentFreq float64, destFreq float64) int64 {
-	delta := int64(math.Round(math.Abs(destFreq-currentFreq) * 100))
+	delta := int64(math.Round(math.Abs(destFreq-currentFreq) * diffScale))
 	if delta < 1 {
 		return 1
-	} else if delta > 8 {
-		return 8
+	} else if delta > maxDelta {
+		return maxDelta
 	}
 	return delta
 }