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I've found some interesting tests that were linked from vogons for verifying x86 CPu
https://forum.osdev.org/viewtopic.php?f ... 9&start=15
I guess it's just a matter of compiling them
I compiled that, they had some errors (relative jump instructions out of range for 8088/86) I think I solved that, there are some "failed" text but I think that's my fault.jordi wrote: ↑Thu Sep 22, 2022 7:40 pm I've found some interesting tests that were linked from vogons for verifying x86 CPu
https://forum.osdev.org/viewtopic.php?f ... 9&start=15
I guess it's just a matter of compiling them
It looks like PCXT passed all that testsMicroCoreLabs wrote: ↑Thu Sep 22, 2022 8:43 pm Here are the tests I wrote to verify the MCL86 core which touch on the opcodes, addressing modes, and flags.
https://github.com/MicroCoreLabs/Projec ... CL86/Tests
It compiles using A86 into .COM files which run under DOS. I'm sure they are not 100% exhaustive but were good enough to verify the core to a large degree.
Source code is simple and can easily be extended. Upon failure it prints a character using a DOS call so you can track it down in the test source code.
, this is how it looks like after running "runall.bat":Yes, this was the desired result!It looks like PCXT passed all that tests
Area5150 still has some bugs, but I don't think they are CPU related. Rather, they are bugs related to the CGA implementation, and perhaps a few with timings.MicroCoreLabs wrote: ↑Fri Nov 18, 2022 4:33 am Has anyone tried Area5150 with all of the bug fixes and upgrades recently?
Please tell me if you notice anything that I can do to help you.spark2k06 wrote: ↑Fri Nov 18, 2022 4:39 amArea5150 still has some bugs, but I don't think they are CPU related. Rather, they are bugs related to the CGA implementation, and perhaps a few with timings.MicroCoreLabs wrote: ↑Fri Nov 18, 2022 4:33 am Has anyone tried Area5150 with all of the bug fixes and upgrades recently?
On the other hand, I have to debug a couple of bugs in games... and at least one of them (Bubble Bobble) I'm sure it's timings or something related to the timer.
Yes, I'll let you know, thank you!kitune-san wrote: ↑Tue Nov 22, 2022 10:54 am Please tell me if you notice anything that I can do to help you.
In area 5150, there are two scenes that slow down.
I assume that many instructions are used which have different number of clocks depending on the source.
For example, DIV or MUL instructions. As I recall, in MCL86, the number of clocks consumed by these instructions is fixed.
However, I have not seen the source code, so this assumption may be incorrect.
Sorry. I don't have a CRT monitor or a 15 kHz monitor. Also, I am not familiar with video modules.thorr wrote: ↑Tue Nov 22, 2022 9:40 pm Thanks for your efforts guys. When you get a chance, if either of you have CRT TV's, it would be great if you could work on stabilizing the CRT TV compatibility/modelines to work on more displays. I don't know if they are already correct compared to real hardware, or if work can be done to improve the situation. I don't know if the latest HDMI fixes also fix this problem. It's possible. I can't test at the moment with my paint fume filled room.
Sorry, I don't have a CRT monitor either, just wait for other developers to show interest in this core.thorr wrote: ↑Tue Nov 22, 2022 9:40 pm Thanks for your efforts guys. When you get a chance, if either of you have CRT TV's, it would be great if you could work on stabilizing the CRT TV compatibility/modelines to work on more displays. I don't know if they are already correct compared to real hardware, or if work can be done to improve the situation. I don't know if the latest HDMI fixes also fix this problem. It's possible. I can't test at the moment with my paint fume filled room.
Sorry if this was a known issue.
Fixed timer. Pls try it.
This is what I have found out so far. The routine in charge of triggering the start-up music is as follows:
Code: Select all
seg000:F945 sub_1F945 proc near ; CODE XREF: seg000:loc_1F907p
seg000:F945 32 E4 xor ah, ah
seg000:F947 BD 00 00 mov bp, 0
seg000:F94A 8B C8 mov cx, ax
seg000:F94C FA cli
seg000:F94D 8E 06 14 01 mov es, word ptr ds:114h
seg000:F951 26 8B 5E 00 mov bx, es:[bp+0]
seg000:F955 3B CB cmp cx, bx
seg000:F957 73 71 jnb short loc_1F9CA
seg000:F959 41 inc cx
seg000:F95A D1 E1 shl cx, 1
seg000:F95C 8B E9 mov bp, cx
seg000:F95E 26 8B 6E 00 mov bp, es:[bp+0]
seg000:F962 0B ED or bp, bp
seg000:F964 74 64 jz short loc_1F9CA
seg000:F966 89 2E 16 01 mov ds:116h, bp
seg000:F96A 26 8B 5E 08 mov bx, es:[bp+8]
seg000:F96E 89 1E 20 01 mov ds:120h, bx
seg000:F972 26 8B 5E 04 mov bx, es:[bp+4]
seg000:F976 89 1E 1A 01 mov ds:11Ah, bx
seg000:F97A 26 8B 5E 02 mov bx, es:[bp+2]
seg000:F97E 89 1E 18 01 mov ds:118h, bx
seg000:F982 8B D5 mov dx, bp
seg000:F984 8B EB mov bp, bx
seg000:F986 8B 36 0E 03 mov si, ds:30Eh
seg000:F98A BF 00 00 mov di, 0
seg000:F98D 8B 0E 3C 00 mov cx, ds:3Ch
seg000:F991 8B D8 mov bx, ax
seg000:F993 83 F9 02 cmp cx, 2
seg000:F996 75 01 jnz short loc_1F999
seg000:F998 49 dec cx
seg000:F999
seg000:F999 loc_1F999: ; CODE XREF: sub_1F945+51j
seg000:F999 ; sub_1F945+7Aj
seg000:F999 26 8B 03 mov ax, es:[bp+di]
seg000:F99C 0B C0 or ax, ax
seg000:F99E 74 19 jz short loc_1F9B9
seg000:F9A0 89 84 58 01 mov [si+158h], ax
seg000:F9A4 89 84 6A 01 mov [si+16Ah], ax
seg000:F9A8 C7 84 22 01 01 00 mov word ptr [si+122h], 1
seg000:F9AE 89 9C 8E 01 mov [si+18Eh], bx
seg000:F9B2 A1 1A 01 mov ax, ds:11Ah
seg000:F9B5 89 84 A0 01 mov [si+1A0h], ax
seg000:F9B9
seg000:F9B9 loc_1F9B9: ; CODE XREF: sub_1F945+59j
seg000:F9B9 83 C6 02 add si, 2
seg000:F9BC 83 C7 02 add di, 2
seg000:F9BF E2 D8 loop loc_1F999
seg000:F9C1 8B EA mov bp, dx
seg000:F9C3 26 8B 46 0A mov ax, es:[bp+0Ah]
seg000:F9C7 0B D2 or dx, dx
seg000:F9C9 C3 retn
seg000:F9CA ; ---------------------------------------------------------------------------
seg000:F9CA
seg000:F9CA loc_1F9CA: ; CODE XREF: sub_1F945+12j
seg000:F9CA ; sub_1F945+1Fj
seg000:F9CA B8 00 00 mov ax, 0
seg000:F9CD 0B C0 or ax, ax
seg000:F9CF C3 retn
seg000:F9CF sub_1F945 endp
Code: Select all
seg000:08C2 ; ---------------------------------------------------------------------------
seg000:08C2 50 push ax
seg000:08C3 53 push bx
seg000:08C4 51 push cx
seg000:08C5 52 push dx
seg000:08C6 1E push ds
seg000:08C7 55 push bp
seg000:08C8 56 push si
seg000:08C9 57 push di
seg000:08CA 06 push es
seg000:08CB B8 C1 31 mov ax, 31C1h
seg000:08CE 8E D8 mov ds, ax
seg000:08D0 D0 0E 2C 01 ror byte ptr ds:12Ch, 1
seg000:08D4 F7 06 30 01 FF FF test word ptr ds:130h, 0FFFFh
seg000:08DA 75 54 jnz short loc_10930
seg000:08DC B8 40 00 mov ax, 40h ; '@'
seg000:08DF 8E C0 mov es, ax
seg000:08E1 26 8B 16 63 00 mov dx, es:63h
seg000:08E6 80 C2 06 add dl, 6
seg000:08E9 B9 2C 01 mov cx, 12Ch
seg000:08EC
seg000:08EC loc_108EC: ; CODE XREF: seg000:08EFj
seg000:08EC EC in al, dx
seg000:08ED 24 08 and al, 8
seg000:08EF E1 FB loope loc_108EC
seg000:08F1 B0 36 mov al, 36h ; '6'
seg000:08F3 E6 43 out 43h, al ; Timer 8253-5 (AT: 8254.2).
seg000:08F5 A0 1A 01 mov al, ds:11Ah
seg000:08F8 E6 40 out 40h, al ; Timer 8253-5 (AT: 8254.2).
seg000:08FA A0 1B 01 mov al, ds:11Bh
seg000:08FD E6 40 out 40h, al ; Timer 8253-5 (AT: 8254.2).
seg000:08FF E3 2F jcxz short loc_10930
seg000:0901 81 F9 13 01 cmp cx, 113h
seg000:0905 72 05 jb short loc_1090C
seg000:0907 83 2E 1A 01 0A sub word ptr ds:11Ah, 0Ah
seg000:090C
seg000:090C loc_1090C: ; CODE XREF: seg000:0905j
seg000:090C 81 F9 E1 00 cmp cx, 0E1h ; 'ß'
seg000:0910 77 0C ja short loc_1091E
seg000:0912 A1 2E 01 mov ax, ds:12Eh
seg000:0915 2B C1 sub ax, cx
seg000:0917 78 05 js short loc_1091E
seg000:0919 83 06 1A 01 02 add word ptr ds:11Ah, 2
seg000:091E
seg000:091E loc_1091E: ; CODE XREF: seg000:0910j
seg000:091E ; seg000:0917j
seg000:091E 89 0E 2E 01 mov ds:12Eh, cx
seg000:0922 8B C1 mov ax, cx
seg000:0924 FF 1E 96 00 call dword ptr ds:96h
seg000:0928 FF 06 24 01 inc word ptr ds:124h
seg000:092C D1 2E 26 01 shr word ptr ds:126h, 1
seg000:0930
seg000:0930 loc_10930: ; CODE XREF: seg000:08DAj
seg000:0930 ; seg000:08FFj
seg000:0930 FB sti
seg000:0931 A1 08 01 mov ax, ds:108h
seg000:0934 01 06 06 01 add ds:106h, ax
seg000:0938 73 0C jnb short loc_10946
seg000:093A FF 06 1E 01 inc word ptr ds:11Eh
seg000:093E D1 2E 20 01 shr word ptr ds:120h, 1
seg000:0942 FF 2E 02 01 jmp dword ptr ds:102h
seg000:0946 ; ---------------------------------------------------------------------------
seg000:0946
seg000:0946 loc_10946: ; CODE XREF: seg000:0938j
seg000:0946 A1 10 01 mov ax, ds:110h
seg000:0949 01 06 0E 01 add ds:10Eh, ax
seg000:094D 73 04 jnb short loc_10953
seg000:094F FF 2E 0A 01 jmp dword ptr ds:10Ah
seg000:0953 ; ---------------------------------------------------------------------------
seg000:0953
seg000:0953 loc_10953: ; CODE XREF: seg000:094Dj
seg000:0953 A1 14 01 mov ax, ds:114h
seg000:0956 01 06 12 01 add ds:112h, ax
seg000:095A 72 0E jb short loc_1096A
seg000:095C B0 20 mov al, 20h ; ' '
seg000:095E E6 20 out 20h, al ; Interrupt controller, 8259A.
seg000:0960 07 pop es
seg000:0961 assume es:nothing
seg000:0961 5F pop di
seg000:0962 5E pop si
seg000:0963 5D pop bp
seg000:0964 1F pop ds
seg000:0965 assume ds:nothing
seg000:0965 5A pop dx
seg000:0966 59 pop cx
seg000:0967 5B pop bx
seg000:0968 58 pop ax
seg000:0969 CF iret
seg000:096A ; ---------------------------------------------------------------------------
seg000:096A
seg000:096A loc_1096A: ; CODE XREF: seg000:095Aj
seg000:096A 07 pop es
seg000:096B 5F pop di
seg000:096C 5E pop si
seg000:096D 5D pop bp
seg000:096E 1F pop ds
seg000:096F 5A pop dx
seg000:0970 59 pop cx
seg000:0971 5B pop bx
seg000:0972 58 pop ax
seg000:0973 FA cli
seg000:0974 2E FF 2E 7A 09 jmp cs:dword_1097A
seg000:0974 ; ---------------------------------------------------------------------------
seg000:0979 90 db 90h ; É
seg000:097A 3C 00 23 15 dword_1097A dd 1523003Ch ; DATA XREF: sub_1072C+5w
seg000:097A ; sub_107A6r ...
Code: Select all
seg000:0973 FA cli
seg000:0974 2E FF 2E 7A 09 jmp cs:dword_1097A
seg000:0974 ; ---------------------------------------------------------------------------
seg000:0979 90 db 90h ; É
seg000:097A 3C 00 23 15 dword_1097A dd 1523003Ch ; DATA XREF: sub_1072C+5w
seg000:097A ; sub_107A6r ...
Code: Select all
seg000:08F1 B0 36 mov al, 36h ; '6'
seg000:08F3 E6 43 out 43h, al ; Timer 8253-5 (AT: 8254.2).
seg000:08F5 A0 1A 01 mov al, ds:11Ah
seg000:08F8 E6 40 out 40h, al ; Timer 8253-5 (AT: 8254.2).
seg000:08FA A0 1B 01 mov al, ds:11Bh
seg000:08FD E6 40 out 40h, al ; Timer 8253-5 (AT: 8254.2).
These routines, they work... but the music sounds too fast in the core, when in a real PCXT the speed is correct.kitune-san wrote: ↑Wed Nov 23, 2022 11:16 amI think this modification will work because it is set to mode 3.Code: Select all
seg000:08F1 B0 36 mov al, 36h ; '6' seg000:08F3 E6 43 out 43h, al ; Timer 8253-5 (AT: 8254.2). seg000:08F5 A0 1A 01 mov al, ds:11Ah seg000:08F8 E6 40 out 40h, al ; Timer 8253-5 (AT: 8254.2). seg000:08FA A0 1B 01 mov al, ds:11Bh seg000:08FD E6 40 out 40h, al ; Timer 8253-5 (AT: 8254.2).
It's working! Thanks... let's try the demos nowkitune-san wrote: ↑Wed Nov 23, 2022 10:53 amFixed timer. Pls try it.