Micro-Designer

Hi. About a year ago I had to cost a Very similar project (Single Board Computer SBC ) to this based on legacy ICs for a client. It didn't use a TMS9900/TMS9995 CPU, the costing where for a professional company to design and build from a 'Design Template' a Z80 SBC with video , sound and I/O etc. Three companies give free quotes which ranged from $10,000 to $15,000 to design/Build and functional test several prototypes. The price didn't include writing any software, OS etc. So for a 'Kick Start' project , to work you would probably need to raise $15,000 !! Hope this is useful ?