Richard Cini
2013-12-29 19:04:15 UTC
All â¹
I¹ve made some great progress with my HC this weekend (thanks John on the SD
soldering). I think this might be the last push I need on this and it
relates to the SD card again.
I have two SD cards â¹ a 512mb and 8gb, both formatted for FAT32 (had to
force it on the 512mb one using the HP formatting tool). I have two ROM
images made â¹ one for CP/M and one for MSX (which also tests the audio and
video  it works), but the SD card isn¹t working with either. I checked that
it was soldered right and that there was continuity based on the schematic.
I re-built the RomWBW to set the card size to 512 (from the standard 64). I
do not see the same setting in the MSX BIOS, although I made sure I changed
SDPORT=1 in SYSOPTS.ASM to configure it for CSIO.
On the MSXBIOS, it looks for LOADER.CAR (I used the 7/12/12 version) but it
didn¹t locate it and ended at MSX-BASIC.
On the RomWBW, I get the following (edited slightly). I guess it¹s not able
to communicate with the SD card or I¹m using a card that the firmware
doesn¹t like for some reason.
SD: UNITS=01 MODE=CSIO FAST IO=0x88 CNTR=0x4A TRDR=0x4B
SD0: COMMAND TIMEOUT
I also have one other question â¹ which is the right MSX BIOS I should be
using? The version I found from 2012 seems to have a file missing that¹s
required to build it.
Thanks again!
Rich
--
Rich Cini
Collector of Classic Computers
Build Master and lead engineer, Altair32 Emulator
http://www.classiccmp.org/cini
http://www.classiccmp.org/altair32
I¹ve made some great progress with my HC this weekend (thanks John on the SD
soldering). I think this might be the last push I need on this and it
relates to the SD card again.
I have two SD cards â¹ a 512mb and 8gb, both formatted for FAT32 (had to
force it on the 512mb one using the HP formatting tool). I have two ROM
images made â¹ one for CP/M and one for MSX (which also tests the audio and
video  it works), but the SD card isn¹t working with either. I checked that
it was soldered right and that there was continuity based on the schematic.
I re-built the RomWBW to set the card size to 512 (from the standard 64). I
do not see the same setting in the MSX BIOS, although I made sure I changed
SDPORT=1 in SYSOPTS.ASM to configure it for CSIO.
On the MSXBIOS, it looks for LOADER.CAR (I used the 7/12/12 version) but it
didn¹t locate it and ended at MSX-BASIC.
On the RomWBW, I get the following (edited slightly). I guess it¹s not able
to communicate with the SD card or I¹m using a card that the firmware
doesn¹t like for some reason.
SD: UNITS=01 MODE=CSIO FAST IO=0x88 CNTR=0x4A TRDR=0x4B
SD0: COMMAND TIMEOUT
I also have one other question â¹ which is the right MSX BIOS I should be
using? The version I found from 2012 seems to have a file missing that¹s
required to build it.
Thanks again!
Rich
--
Rich Cini
Collector of Classic Computers
Build Master and lead engineer, Altair32 Emulator
http://www.classiccmp.org/cini
http://www.classiccmp.org/altair32
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