Search found 12 matches

by Dulton
Sun 28 Jul, 2019 6:55 am
Forum: General
Topic: Plantronics ColorPlus and Sierra SCI0 based games
Replies: 10
Views: 3175

Re: Plantronics ColorPlus and Sierra SCI0 based games

Doing an accurate emulation of the MDA/Hercules-video-on-CGA-monitor modes (using interlacing to get 350 lines out of a 200-line monitor) could be a challenge, too. I remember that MDA/Herc-on-CGA-monitor didn't look very attractive. CGA/Plan-on-MDA-monitor looked fine. Not sure how they made 200 l...
by Dulton
Fri 12 Jul, 2019 4:35 pm
Forum: General
Topic: 768kB RAM on Generic Turbo XT
Replies: 4
Views: 1595

Re: 768kB RAM on Generic Turbo XT

Ah yes, I understand now, thnx.
It's 64kB extra (not 128kB) which is simply added to the normal memory pool creating a total of 704kB. No (need for) upper memory blocks.
by Dulton
Fri 12 Jul, 2019 2:58 pm
Forum: General
Topic: 768kB RAM on Generic Turbo XT
Replies: 4
Views: 1595

Re: 768kB RAM on Generic Turbo XT

omarsis81 wrote:
Fri 12 Jul, 2019 2:34 pm
Can't it be used by HIMEM like you Philips?
Nope (or not yet), the last 128kB are not "visible".
by Dulton
Fri 12 Jul, 2019 12:02 pm
Forum: General
Topic: 768kB RAM on Generic Turbo XT
Replies: 4
Views: 1595

768kB RAM on Generic Turbo XT

In the configuration window I can select 768kB RAM for a Generic Turbo XT. Question: What happens to the 128kB above 640kB? I have a Philips NMS-9100 Turbo XT with 768kB RAM. The extra 128kB is mapped to address range D0000-EFFFF and can be used by HIMEM.SYS for UMB. Would love to see this in PCem a...
by Dulton
Mon 10 Jun, 2019 11:35 am
Forum: General
Topic: How to connect a folder in PCem to my own Computer?
Replies: 7
Views: 3903

Re: How to connect a folder in PCem to my own Computer?

It should as basically all you need is networking. This will even work from DOS. But it does take a bit more than just clicking on a checkbox. You need to be sure that the emulated machine and the host are using the same protocols. Take e.g. a basic XT with a NE2000 network card. The DOS (and Window...
by Dulton
Sun 09 Jun, 2019 4:18 pm
Forum: General
Topic: How to connect a folder in PCem to my own Computer?
Replies: 7
Views: 3903

Re: How to connect a folder in PCem to my own Computer?

Ages ago (20+ years) I created this feature for an Amstrad CPC emulator by creating a custom ROM image with some "unusual" IN instructions to trigger access to the file system of the host. This was very easy to do as the file system is part of the Firmware (BIOS). But on PCs this is not the case... ...
by Dulton
Fri 07 Jun, 2019 9:25 am
Forum: General
Topic: Plantronics ColorPlus and Sierra SCI0 based games
Replies: 10
Views: 3175

Re: Plantronics ColorPlus and Sierra SCI0 based games

Anyway. I've tested Space Quest III on an emulated Generic XT clone (8088) + Plantronics ColorPlus + Adlib + XTIDE + Generic BIOSes + my SCI0 drivier, and it works great! Also, PCem team, thank you for helping me fixing a near 30-year old bug. I only had a monochrome display, so I couldn't tell the ...
by Dulton
Fri 07 Jun, 2019 9:13 am
Forum: General
Topic: Plantronics ColorPlus and Sierra SCI0 based games
Replies: 10
Views: 3175

Re: Plantronics ColorPlus and Sierra SCI0 based games

I did a quick check on the test/demo program. It simply sets video mode to 6 (640×200,2 colours) using BIOS and then enables the 4 colour mode by setting bit 5 at port 3DDh. The Generic XT BIOS I use here sets bit 2 (Black and white) and thus selects the third palette. So either the test program did...
by Dulton
Thu 06 Jun, 2019 8:12 pm
Forum: General
Topic: Plantronics ColorPlus and Sierra SCI0 based games
Replies: 10
Views: 3175

Re: Plantronics ColorPlus and Sierra SCI0 based games

omarsis81 wrote:
Thu 06 Jun, 2019 2:16 pm
He made the Plantronics emulation
http://pcem-emulator.co.uk/phpBB3/membe ... ile&u=1312
ok, thnx.
Just wondering if it's worth the trouble though. It's just a demo, and not even designed for the ColorPlus.
by Dulton
Thu 06 Jun, 2019 8:07 pm
Forum: General
Topic: Plantronics ColorPlus and Sierra SCI0 based games
Replies: 10
Views: 3175

Re: Plantronics ColorPlus and Sierra SCI0 based games

omarsis81 wrote:
Thu 06 Jun, 2019 2:16 pm
The ATI chipset you had was this? ATI CW16800-B
I still have one of those PCs but the hard drive failed. Can't be bothered to repair it (yet).
The (single) chip is the ATi 18700.
The card is this one ATi Small Wonder GS (wikipedia) but in perfect condition (fresh from the factory :D )
by Dulton
Wed 05 Jun, 2019 11:49 pm
Forum: General
Topic: Plantronics ColorPlus and Sierra SCI0 based games
Replies: 10
Views: 3175

Re: Plantronics ColorPlus and Sierra SCI0 based games

The ATi small wonder card comes with software to test and demo the features, incl. the ColorPlus compatible ones. The 320×200, 16 colour mode works fine and this is what my driver is using. The 640×200, 4 colour mode seems to have an issue. I see white and cyan were brown and green where expected. S...
by Dulton
Wed 05 Jun, 2019 11:33 pm
Forum: General
Topic: Plantronics ColorPlus and Sierra SCI0 based games
Replies: 10
Views: 3175

Plantronics ColorPlus and Sierra SCI0 based games

Because the dutch government promoted private PC ownership in the 80's, civil servants and public servants got large discounts on PCs with an ATi small wonder card. This card is compatible with the Plantronics ColorPlus. As a result, these PCs were plentiful and I had plenty fun with these, incl. so...