The circuit won't work. The top part of the h-bridge must be driven with a high side driver. I posted a design for a cpld based stepper several years ago. I've attached the schematic. You can copy the power section and modify it for your drive.
The circuit won't work. The top part of the h-bridge must be driven with a high side driver. I posted a design for a cpld based stepper several years ago. I've attached the schematic. You can copy the power section and modify it for your drive.