http://groups.yahoo.com/group/CoCo3FPGA/ CoCo3FPGA Thu, 26 Jan 2012 04:20:03 GMT Mark McDougall http://groups.yahoo.com/group/CoCo3FPGA/message/445 http://groups.yahoo.com/group/CoCo3FPGA/message/445 ... I would also point out that there are other retro micro emulations available for the DE1 as well; it's a popular choice of platform. Regards, -- Thu, 26 Jan 2012 03:11:39 GMT Gary Becker http://groups.yahoo.com/group/CoCo3FPGA/message/444 http://groups.yahoo.com/group/CoCo3FPGA/message/444 CoCo3FPGA is supported on two different FPGA platforms. The first was the Digilent Spartan 3 Starter board. The second board is the TerASIC DE1. Thu, 26 Jan 2012 01:53:56 GMT gotitdownpat@... http://groups.yahoo.com/group/CoCo3FPGA/message/443 http://groups.yahoo.com/group/CoCo3FPGA/message/443 Greetings all. I am new to the forum and just had a general question to get me started in the flow. Could you tell me generally what the necessary hard- and Thu, 19 Jan 2012 13:14:47 GMT John Kent http://groups.yahoo.com/group/CoCo3FPGA/message/442 http://groups.yahoo.com/group/CoCo3FPGA/message/442 Hi Leslie, I had separated the DE1 SDRAM controller out before I discovered the other one. I suspect that SDRAM has standardized to some extent on the Wed, 18 Jan 2012 17:26:48 GMT Aaron Wolfe http://groups.yahoo.com/group/CoCo3FPGA/message/441 http://groups.yahoo.com/group/CoCo3FPGA/message/441 There is also the option to just modify HDBDOS-DW to use the Boisy interface. This is a simple modification, I think I can probably do it for you if desired. Wed, 18 Jan 2012 17:14:02 GMT Gary Becker http://groups.yahoo.com/group/CoCo3FPGA/message/440 http://groups.yahoo.com/group/CoCo3FPGA/message/440 Using DW is my preference also. But the present version of HDB-DOS for DW is not a good option. The bit banger port relies on software timing loops to make it Wed, 18 Jan 2012 14:18:22 GMT pittelfrank http://groups.yahoo.com/group/CoCo3FPGA/message/439 http://groups.yahoo.com/group/CoCo3FPGA/message/439 ... As I understand it the drivewire version of of hdb-dos is available as a ROM image that can be burned into an eprom and installed in a floppy controller. Wed, 18 Jan 2012 08:11:59 GMT RedskullDC http://groups.yahoo.com/group/CoCo3FPGA/message/438 http://groups.yahoo.com/group/CoCo3FPGA/message/438 Hi John, et al. ... The one in the sub-directory is *very* similar, but not identical. The 1-chip MSX has a K4S561632E-TC75 SDRAM: Tue, 17 Jan 2012 12:07:00 GMT John Kent http://groups.yahoo.com/group/CoCo3FPGA/message/437 http://groups.yahoo.com/group/CoCo3FPGA/message/437 There is a separate SDRAM controller in: emsx_top_dev_20080712\fpga_design\src\one_chip_msx_board\sdram_controller I'm not sure if it is compatible with the Tue, 17 Jan 2012 07:27:09 GMT John Kent http://groups.yahoo.com/group/CoCo3FPGA/message/436 http://groups.yahoo.com/group/CoCo3FPGA/message/436 Sorry Mark & Leslie, I was going to reply yesterday but got a bit side tracked. I found the OCM file yesterday after a bit of looking around. I've downloaded a Mon, 16 Jan 2012 12:24:18 GMT Mark McDougall http://groups.yahoo.com/group/CoCo3FPGA/message/435 http://groups.yahoo.com/group/CoCo3FPGA/message/435 ... I guess what I really meant was that it wasn't a pre-packed entity... :) Regards, -- Mon, 16 Jan 2012 12:14:46 GMT RedskullDC http://groups.yahoo.com/group/CoCo3FPGA/message/434 http://groups.yahoo.com/group/CoCo3FPGA/message/434 Hi Mark, et al. ... It is relatively easy to extract actually. Download: http://www5d.biglobe.ne.jp/~hra/note/onechipmsx/files/emsx_top_dev_20080712.zip or Mon, 16 Jan 2012 02:03:20 GMT William Astle http://groups.yahoo.com/group/CoCo3FPGA/message/433 http://groups.yahoo.com/group/CoCo3FPGA/message/433 ... The actual routines needed to use the Boisy interface are trivial and do merely replace the existing low level read/write routines in the standard Sun, 15 Jan 2012 22:29:05 GMT Mark McDougall http://groups.yahoo.com/group/CoCo3FPGA/message/432 http://groups.yahoo.com/group/CoCo3FPGA/message/432 ... There are two that I know of that have been successfully used on the DE1... the core from the DE1 port of Minimig (Amiga 500), and the YADMC controller Sun, 15 Jan 2012 22:25:12 GMT thebig_a_27 http://groups.yahoo.com/group/CoCo3FPGA/message/431 http://groups.yahoo.com/group/CoCo3FPGA/message/431 Yeah I wondered about that. I would think an HDBDOS rom modified to use a regular serial port would be a fairly small task, just changing the two routines for