[BUG] PCem crashes with DTC 5150x HD controller on Compaq Portable

Discussion of development and patch submission.
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DSN
Posts: 76
Joined: Fri 03 Jan, 2020 8:47 pm

[BUG] PCem crashes with DTC 5150x HD controller on Compaq Portable

Post by DSN » Tue 24 Mar, 2020 9:10 pm

Hi all!

I was not able to setup DOS 2.14 on Compaq Portable Plus, because PCem crashed shortly before the boot with this
error when "DTC 5150X" is selected:

Code: Select all

Unknown Xebec command - 20 07 00 00 00 00
I tried "IBM Fixed Disk Adapter (Xebec)", and it seems to not crash with this controller , but appears to get stuck in a blinking cursor.

Can anyone confirm this? Maybe a PCem bug?

My machine:
Compaq Portable Plus
8088/4.77mhz
256Kb ram
Compaq CGA (Green monochrome)
dual 360k 5.25" floppy drives
20mb harddrive (Type 02)
Mouse Systems 3 button mouse

EDIT: I was wrong, I confused DOS 2.12 with DOS 2.14. Sorry.
Last edited by DSN on Wed 25 Mar, 2020 11:51 am, edited 1 time in total.

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te_lanus
Posts: 117
Joined: Tue 28 Jul, 2015 4:47 am

Re: [BUG] PCem crashes with DTC 5150x HD controller on Compaq Portable

Post by te_lanus » Wed 25 Mar, 2020 6:44 am

I tried this morning, using your specs, and have it working here with DOS 2.02 and 3.3. I don' have 2.14 so can't test that.
2020-03-25 0814.png
2020-03-25 0814.png (25.51 KiB) Viewed 134 times
just saying that Starting the system while no os is installed on the hdd causes pcem to crash, I was choosing the OS disks:
pcem: ../../src/hb-object-private.hh:154: Type* hb_object_reference(Type*) [with Type = hb_unicode_funcs_t]: Assertion `hb_object_is_valid (obj)' failed.
Aborted (core dumped)

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