Dumping/reverse engineering MSX models thread

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By CASDuino

Champion (293)

CASDuino's picture

14-06-2022, 17:38

sdsnatcher73 wrote:

Hi CASDuino, how are you progressing? Really curious! Will you use LVA510 on your redesign or are you considering alternative solutions (as LVA510 are not easily available).

Tbh I'm still trying and will go with LVA510 to see if it will work first and then look for an alternative if they are too difficult to get a hold of.

By bluemsx

Resident (42)

bluemsx's picture

08-08-2022, 15:35

*Goldstar GFC-1080 (MSX)

I made xml for openMSX and attached dumped System BIOS ROM.

You can download it.

www.mediafire.com/file/0hdr08nmc2rmsyv

By bluemsx

Resident (42)

bluemsx's picture

08-08-2022, 16:08

sd_snatcher wrote:
  • The European Toshiba HX-10 have been dumped, but the original Japanese model hasn't
  • Most of the European Spectravideo models have been dumped, but the US models still haven't
  • The European Sony HB-F500P have been dumped, but the Japanese HB-F500 hasn't
  • The Mitsubishi ML-G1 European model have been dumped, but the Japanese model hasn't
  • The Russian Yamaha YIS805/128 have been dumped, but not the Japanese model
  • Only the Yamaha CX5M & CX5MII European models have been dumped. Many other models are missing: US, Australian, etc.

Many other relevant machines are still missing:

  • Daewoo CPC-300
  • Hitachi MB-H50
  • Toshiba HX-23
  • Toshiba HX-23F
  • Toshiba HX-33
  • Toshiba HX-34
  • Talent DPC-300
  • Mitsubishi ML-G10
  • Mitsubishi ML-G30
  • Mitsubishi ML-G30mkII
  • Sanyo PHC-55FD2
  • Yamaha YIS805/256
  • Yamaha CX7M
  • Many models from the middle East

Any Sony's MSX Japanese machine is still missing or bad dumped.

*Sony
HB-11 (MSX) / Kanji Rom + Word Processor
HB-701 (MSX) / Re-dump Hit Bit software needed.
HB-701FD (MSX) / Re-dump Hit Bit software & disk rom needed.
HB-T600 (MSX2) / Re-dump RS-232C software needed (64KB), no needed to dump Kanji Rom
HB-T7 (MSX2) / Re-dump RS-232C software needed (64KB), no needed to dump Kanji Rom

By sdsnatcher73

Prophet (3516)

sdsnatcher73's picture

08-08-2022, 16:24

HB-T7 and HB-T600 are dumped by me from original hardware. I have the 64kB dumps of slot 3-1 of both T7 and T600.

I will receive a HB-701FD in a month or 2 but there is no disk in the set (at least not in the images).

By bluemsx

Resident (42)

bluemsx's picture

08-08-2022, 19:19

sdsnatcher73 wrote:

HB-T7 and HB-T600 are dumped by me from original hardware.

Thanks very much!
Unfortunately I think this dump is insufficient.
The reason why, switched I/O bank address should be via 4000-5FFFh, but your dump is via 4000-7FFFh on Slot 3-1
(Program area is dumped as 32KB, working area is dumped as 32KB)

4000-5FFFh : Program area
6000-7FFF : Working area

You don't have to dump working area (6000-7FFF)
So re dump is needed as 64KB via 4000-5FFF.

I hope you to dump Slot 3-1 by correct bank S/W address (4000-5FFFh) as 64KB on T600 (Twice), T7 (once)
I think each firmware on 3-1 is different.

*If you can't fix the dump program, would you please dump 3-1 as 256KB both T600 and T7?
I can edit it.

Also would you please dump Slot 3-2 as 64KB (Plain ROM) on HB-T600 and HB-T7?

I know HB-T7 and HB-F500 have Kanji ROM (JIS 1st class).
I'm sure it is same as HB-F500 and HB-F900, but I only wonder it is same dump from EPROM.
Kanji ROM for National / Panasonic / Sony / Sanyo / Toshiba / Victor can be dumped by KANJIROM.BAS
But Kanji ROM for Yamaha will not be dumped by KANJIROM.BAS because of different I/O address.

JIS 1st class : D8h~D9h
JIS 2nd class : DAh-DBh

By Manuel

Ascended (18938)

Manuel's picture

09-08-2022, 10:13

Welcome back "bluemsx"... Where have you been?

By bluemsx

Resident (42)

bluemsx's picture

09-08-2022, 11:15

Manuel wrote:

Welcome back "bluemsx"... Where have you been?

Hi, Manuel.

Yes, it's been a while since I've written here.
Due to various circumstances, I have been away from MSX's hobbies for a while.

By bluemsx

Resident (42)

bluemsx's picture

09-08-2022, 16:12

sdsnatcher73 wrote:

HB-T7 and HB-T600 are dumped by me from original hardware. I have the 64kB dumps of slot 3-1 of both.

To recap, the dumped image was only half the content.

Would you please redunp the following?

HB-T600
Slot 3-1 : Dump RS232c firmware as 648KB (Switched Address : 4000-5FFFh, Total Bank : 08) --> T6S3164.BIN (64KB)
Slot 3-1 : Dump RS232c firmware as 128KB (Switched Address : 4000-5FFFh, Total Bank : 16) --> T631128.BIN (128KB)
Slot 3-2 : 64KB Slot dump (0000-FFFFh) --> T6S32.BIN (64KB)

HB-T700
Slot 3-1 : Dump RS232c firmware as 648KB (Switched Address : 4000-5FFFh, Total Bank : 08) --> T7S3164.BIN (64KB)
Slot 3-1 : Dump RS232c firmware as 128KB (Switched Address : 4000-5FFFh, Total Bank : 16) --> TTS31128.BIN (128KB)
Slot 3-2 : 64KB Slot dump (0000-FFFFh) --> T7S32.BIN (64KB)

I'm sure dumping for Sony MSX2 HB-T600 / HB-T7 will be complete or perfect.

By sdsnatcher73

Prophet (3516)

sdsnatcher73's picture

09-08-2022, 16:33

Sorry, I don’t have these machines anymore.

By bluemsx

Resident (42)

bluemsx's picture

09-08-2022, 17:09

sdsnatcher73 wrote:

Sorry, I don’t have these machines anymore.

Oops, If I had known sooner, it would have been a perfect dump.

Anyway, Sony MSX2 HB-T600, HB-T7 is still missing list.

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