Comments on: Microsoft C KnowledgeBase articles online

By: techfury90

techfury90 — Sun, 22 Oct 2017 22:10:18 +0000

In reply to neozeed. Shoot me an email at the address I used on this comment and I'll hook you up with 6.2.

By: neozeed

neozeed — Sun, 22 Oct 2017 22:10:16 +0000

In reply to techfury90. Cool! That and hopefully QuakeWorld... Mine has a pci bus as well. I'm hoping packet drivers will work..

By: neozeed

neozeed — Sun, 22 Oct 2017 22:08:54 +0000

In reply to techfury90. I ran it raw. Dos 3.3 I need to get 5 and 6 for m 98. For some reason the pirates are light on pc98 or I don't know where to look

By: techfury90

techfury90 — Sun, 22 Oct 2017 22:04:03 +0000

In reply to neozeed.

http://darudarudan.syuriken.jp/kai/vram9821.lzh

Sample code for the PC-9821 256 color mode you’ll want to use for DooM (it’s what the original port’s pc9821.drv is for). VRAM_GCC.C is a version for DJGPP 2.01.

By: techfury90

techfury90 — Sun, 22 Oct 2017 22:00:28 +0000

In reply to neozeed.

http://hakosima.tripod.com/dj98/dj98inst.html
Seems to imply that I can make it coexist with EMM386 /DPMI easily. Excellent.

http://www.mfp.gr.jp/users/takas/prog/djgpp.html
2.03 libc patch. Very comprehensive, resulting executables run equally well on PC-98 or PC/AT. I need to get around to porting this to 2.05.

By: techfury90

techfury90 — Sun, 22 Oct 2017 21:56:13 +0000

In reply to neozeed. Does DJGPP v1 run fine with EMM386? I should probably test this out. What files did you use to get it going?

By: neozeed

neozeed — Sun, 22 Oct 2017 21:43:32 +0000

In reply to techfury90. Wow video IRQ's.. that's a blast from 68000 land. Hsync and vsync to mess with modes riding the beam.

By: neozeed

neozeed — Sun, 22 Oct 2017 21:42:04 +0000

In reply to techfury90.

Serial keyboards! Wow so CP/M!! I always knew these machines were a little odd…

Good to know V2 can drive stuff, although the last generation of v1 wasn’t so bad either. DPMI support, coff and a.out formats. There is also support for tasks and other things. Sure it won’t play nice with other DPMI stuff but I think we have safely moved beyond the need for Windows 3.1 compatibility

By: techfury90

techfury90 — Sun, 22 Oct 2017 19:33:02 +0000

In reply to techfury90. There's also a VSync interrupt available (IRQ 2), FWIW.

By: techfury90

techfury90 — Sun, 22 Oct 2017 19:30:58 +0000

The closest equivalent to mode 13h is the 640×400 and 640×480 256 color chunky modes, found on all 486 and up 9821 machines.

I believe I have found some sample code for DJGPP v2 for said mode, will look around later today. If not, I can hack something up, I’ve got enough references to pull it off.

By clock, do you mean the RTC or an interval timer? RTC is an oddball NEC chip (uPD1990/4990, yes, the same as a Neo Geo), interval timer is a typical 8253 PIT, just hooked up differently. I believe 9821s also have an extra high-res interval timer, but I have not extensively studied it.

Keyboard: there’s no KBC, the keyboard just connects over TTL serial at 19200 baud to an 8251 USART. I believe there’s also a relevant BIOS call under INT 18, but I’d have to look. Let me dig through all the Japanese sample code I’ve managed to find…