Comments on: PCem ported to FreeBASIC https://virtuallyfun.com/2019/02/18/pcem-ported-to-freebasic/ Fun with Virtualization Sat, 11 Nov 2023 19:52:46 +0000 hourly 1 https://wordpress.org/?v=7.0 By: neozeed https://virtuallyfun.com/2019/02/18/pcem-ported-to-freebasic/comment-page-1/#comment-343089 Sat, 11 Nov 2023 19:52:46 +0000 https://virtuallyfun.com/wordpress/?p=9233#comment-343089 In reply to Thomas.

Winbios?

]]> By: Thomas https://virtuallyfun.com/2019/02/18/pcem-ported-to-freebasic/comment-page-1/#comment-343075 Sat, 11 Nov 2023 17:01:54 +0000 https://virtuallyfun.com/wordpress/?p=9233#comment-343075 What is that Bios rom for PCem named? American Megatrends with that bios with mouse? Cheers!

]]> By: Thomas https://virtuallyfun.com/2019/02/18/pcem-ported-to-freebasic/comment-page-1/#comment-343073 Sat, 11 Nov 2023 16:56:54 +0000 https://virtuallyfun.com/wordpress/?p=9233#comment-343073 What is that Bios for PCem named? American Megatrends with that bios with mouse? Cheers!

]]> By: li https://virtuallyfun.com/2019/02/18/pcem-ported-to-freebasic/comment-page-1/#comment-208229 Tue, 19 Feb 2019 06:44:08 +0000 https://virtuallyfun.com/wordpress/?p=9233#comment-208229 PCEM 286 可能有BUG，286 gate descriptors type 是 4-7，但是PCEM 支持大于8的descriptors type

]]> By: Mike Chambers https://virtuallyfun.com/2019/02/18/pcem-ported-to-freebasic/comment-page-1/#comment-208188 Mon, 18 Feb 2019 17:24:50 +0000 https://virtuallyfun.com/wordpress/?p=9233#comment-208188 That’s pretty awesome. I wrote a FreeBASIC 80186 PC emulator in 2011 that worked really well. It ran most old games, Windows 3.0 and MINIX, etc. A few years later, I ported it to VB6 for fun.

It took 8 years, but I’ve been officially beaten now with a 486 emulator. Good work! 🙂

I’ll have to get back to work and see if I can reclaim the crown somehow. Competition breeds progress!

]]> By: Greg Harbs https://virtuallyfun.com/2019/02/18/pcem-ported-to-freebasic/comment-page-1/#comment-208178 Mon, 18 Feb 2019 15:45:43 +0000 https://virtuallyfun.com/wordpress/?p=9233#comment-208178 oops, you are right… so damn used to write that way… 🙁

]]> By: neozeed https://virtuallyfun.com/2019/02/18/pcem-ported-to-freebasic/comment-page-1/#comment-208177 Mon, 18 Feb 2019 15:14:29 +0000 https://virtuallyfun.com/wordpress/?p=9233#comment-208177 In reply to Greg Harbs.

> your freebasic code

It’s not mine. It’s written by jepalza.

You should follow it up on his post:

https://www.freebasic.net/forum/viewtopic.php?f=8&p=258396#p258396

]]> By: Ian Dunbar https://virtuallyfun.com/2019/02/18/pcem-ported-to-freebasic/comment-page-1/#comment-208175 Mon, 18 Feb 2019 14:29:46 +0000 https://virtuallyfun.com/wordpress/?p=9233#comment-208175 In reply to Greg Harbs.

Which makes it doubly surprising that it works as well as it does. Also, you make it sound like this is neozeed’s code. It isn’t, and I doubt that the person who did write the code will see you comments here.

]]> By: Greg Harbs https://virtuallyfun.com/2019/02/18/pcem-ported-to-freebasic/comment-page-1/#comment-208171 Mon, 18 Feb 2019 12:29:21 +0000 https://virtuallyfun.com/wordpress/?p=9233#comment-208171 nice, but your freebasic code is terrible….
not used -gen gcc to optimize it (not doing that would be almost equivalent of compiling with -O0 in C)
using “dim shared” instead of the faster “static shared” for global fixed size arrays… using “select case as const” with just 3 options (thats slow even with -gen gcc) using one line functions instead of macros, using loops instead of memset to set byte arrays, settings byte arrays byte by byte instead of int by int, for a project of this magnitude using “screen” instead of “screenres” make it feel you are coding for qbasic, not using “=any” on local variables that dont need to be initialized to 0 (all of them since this was converted from c), not using freebasic pointers, etc…

]]>