VOGONS


First post, by zuldan

User metadata
Rank Member
Rank
Member

I’m trying to determine if the ROM version for a CM-32L is v1.00 or not

Is it safe to assume that because the ROM is soldered directly to the PCB it is NOT v1.00? Where as the v1.00 version has a socket? One of Phil’s videos seem to suggest this. What’s interesting is that it’s serial number starts with A and not Z?

7FE8E3E5-FCE8-47F2-A52F-13A31AE0C39E.jpeg
Filename
7FE8E3E5-FCE8-47F2-A52F-13A31AE0C39E.jpeg
File size
54.13 KiB
Views
314 views
File license
Public domain

Also, does this PCB as a whole look ok?

c5q5vof3llprrbv6wnxu.jpg
Filename
c5q5vof3llprrbv6wnxu.jpg
File size
448.56 KiB
Views
305 views
File license
Public domain
Last edited by zuldan on 2024-05-12, 12:00. Edited 2 times in total.

Reply 2 of 7, by zuldan

User metadata
Rank Member
Rank
Member

I found a website that allows you to lookup Roland serial numbers to give you a date of manufacture. This one was end of 1991. Since the CM-32L started production 1989 I think it’s safe to say a 1991 model was not running v1.00

https://serial-number-decoder.co.uk/roland/roland.htm

Reply 3 of 7, by keropi

User metadata
Rank l33t++
Rank
l33t++

why not just use TAKEGO.MID to be 100% sure? if you have v1.00 rom you will immediately hear it - there is no mistaking

🎵 🎧 PCMIDI MPU , OrpheusII , Action Rewind , Megacard and 🎶GoldLib soundcard website

Reply 4 of 7, by zuldan

User metadata
Rank Member
Rank
Member
keropi wrote on 2024-05-13, 06:53:

why not just use TAKEGO.MID to be 100% sure? if you have v1.00 rom you will immediately hear it - there is no mistaking

I wish I could. I don’t have physical access to the device. I was trying to determine the version prior to purchase 😝 it’s a bit of a gamble but if it does turn out to be v1.00 I’ll solder on a socket and flash the another rom with the newer firmware. Just a bit more work I guess.

When the device arrives I’ll run TAKEGO.MID and let you know what it is. Wish me luck!

Reply 5 of 7, by keropi

User metadata
Rank l33t++
Rank
l33t++

ah I missed the part where you don't have the unit yet 😁
pretty sure it will not be 1.00 so you'll be lucky!

🎵 🎧 PCMIDI MPU , OrpheusII , Action Rewind , Megacard and 🎶GoldLib soundcard website

Reply 6 of 7, by zuldan

User metadata
Rank Member
Rank
Member
keropi wrote on 2024-05-13, 09:08:

ah I missed the part where you don't have the unit yet 😁
pretty sure it will not be 1.00 so you'll be lucky!

CM-32L arrived today. TAKEGO.MID plays perfectly, no clicking sound. So it’s a v1.02 ROM. Very happy!

D4F0142A-52C4-4771-A7F4-416AAED1A4F3.jpeg
Filename
D4F0142A-52C4-4771-A7F4-416AAED1A4F3.jpeg
File size
1.43 MiB
Views
146 views
File license
Public domain