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Rev Log message Author Age Path
29 Allow either Monitor 4.0C (serial) or 4.3 (Flashwriter2) to be used, depending on `define. hharte 5655d 14h /
28 Initial Version, Front Panel (Programmed Output Port, and Sense
Switches)
hharte 5655d 14h /
27 Clean up comments. hharte 5655d 14h /
26 Add MON4043.mem, Monitor 4.0C and 4.3 in a single file.
sector0.mem is the first sector off of the disk, for debugging.
hharte 5655d 15h /
25 BIT and MCS files for Spartan 3E Starter Kit, using Monitor 4.0C Serial
Monitor for I/O instead of Flashwriter2. Use male DB9 Serial Port on Spartan
3E Starter Kit for console, 115200,7,S,1

at monitor prompt, 'G E80C' to boot CP/M.
hharte 5655d 15h /
24 Fix dat width hharte 5657d 00h /
23 Fix shifted keys,
start adding support for ctrl keys.
hharte 5657d 00h /
22 Fix UART to work as Bitstreamer serial ports. hharte 5657d 00h /
21 Update to latest version of wb_ddr from soc_lm32 project hharte 5657d 00h /
20 Update to latest version of wb_ddr core from soc-lm32 project hharte 5657d 00h /
19 Fix Address Width parameter hharte 5657d 00h /
18 Fix incorrect first row of each character in first column. hharte 5657d 01h /
17 Clean up comments/whitespace. hharte 5662d 14h /
16 Boots Vector Graphic CP/M 2.2 from FLASH disk image.
Added ISE Project files, MCS and BIT files for programming the FPGA.
hharte 5662d 18h /
15 Constraint file for S3E Starter Kit hharte 5662d 19h /
14 Deleted, moved to S3E SK Directory. hharte 5662d 19h /
13 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.
hharte 5662d 19h /
12 Initial implementation of a Vector Graphic HD/FD Disk Controller
with Wishbone interface. See the PDF in /doc for more information
about this controller.

For now, the storage is implemented in FLASH memory, which is read-only
to the controller. Also, the controller does not check (CRC) the disk
sector data, like the original does. Instead, it inserts 00's where the
CRC goes, to simulate a correctly checked CRC.

I am able to boot CP/M 2.2 using this controller, with the vgboot.mcs image
programmed into FLASH. See the diskimage/ directory.
hharte 5662d 19h /
11 Fully parameterize so different size SRAMs can be instantiated. hharte 5662d 19h /
10 Change address mapping for I/O cycles. hharte 5662d 19h /

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