Subversion Repositories vg_z80_sbc

Last modification

• Rev 13, 2008-12-08 02:15:44 GMT
• Author: hharte

• Log message:

  Changed I/O addressing so addresses are not shifted left by two bits.
  Commented out DDR controller, and replaced with 8K of SRAM.
  Replaced FLASH memory interface with 4K SRAM.
  Added Vector HD/FD Disk Controller, using FLASH memory for storage.
  
  This design can now boot Vector Graphic 56K CP/M 2.2. But be aware
  that there is only 12K in the TPA, since the Spartan3E does not have
  enough block RAM to make more.
  
  This system is enough to test the Z80 core more thorougly. The
  EXZ80ALL.COM program on the included disk image tests all documented
  Z80 instructions. Some tests pass, some don't. This means there is
  more work to be done on the wb_z80 core.