The Bare Bones EPROM Programmer 
         
         
         Dear Potential Bare Bones EPROM Programmer Owner,
         
              I have a Bare Bones EPROM Programmer Kit available. The 
         plans and software on disk cost only $15.  It is a two-IC 
         project which is easy to build on a plastic breadboard or by 
         wire-wrapping, etc.  I include the artwork for a PCB (printed 
         circuit board), if you want to make your own PCB.  
         
              The software runs on the PC, which connects to the Bones 
         board through a serial port, and makes it easy to burn an EPROM 
         from a file on the PC, copy an EPROM's contents to a file on the 
         PC, convert a binary file to either a Motorola S1-S9 format or 
         an Intel Hex format, or vice versa.  The software is 
         menu-driven, easy to use, and even includes the ability to 
         toggle the PC's serial port pins on and off repeatedly. This has 
         helped me (with no EPROM programmer board involved at all) to 
         sort out serial port connections. 
         
         
              The two ICs needed are an MC68HC11D0P microprocessor and a 
         CMOS hex inverter (either 4049 or 74HC4049).  You need to supply 
         the power (5 Vdc) and the programming voltage (12.5 Vdc, 21 Vdc, 
         or 25 Vdc, depending on the particular EPROM you are 
         programming).  This can come from batteries, a wall transformer, 
         etc.  I sell a parts kit for an additional $25 for your 
         convenience (you can probably find the parts cheaper on your 
         own).  From time to time I also have a PCB available for $25.  
         This seems overpriced to me, so please make your own, instead.  
         Also, I often do not have any PCBs on hand, so if you are 
         ordering a PCB, include a SEPARATE CHECK for it, so I can return 
         that check if I don't have a PCB available at the time of your 
         order.  The Bare Bones EPROM programmer only programs the 
         following types of EPROMs:  2716 (2Kx8), 2764 (8Kx8), 27128 
         (16Kx8), and 27256 (32Kx8).  Surely it can be used to program 
         EEPROMs as well, but I haven't actually tried that yet.
         
              At these prices, if you don't have an EPROM programmer of 
         your very own, there is no longer any need for you to deprive 
         yourself!
         
         How to Order:  Send cash, check, money order in US dollars to 
         
                             Frank Sergeant
                             809 W. San Antonio Street
                             San Marcos, Texas  78666.  
         
         Texas destinations add 8.25% sales tax.  Shipping included in 
         the U.S.  Send extra for shipping to foreign addresses. Specify 
         3-1/2" or 5-1/4" diskette.