Overclocking BVision

[delshay]

Not really. The filesystem is I/O bound anyway, so there is little benefit from porting it to PPC.

I've used PFS3 as my main filesystem on MorphOS for 10 years now.

its the only filesystem i use OS4.0. i hope someone can do a update or look at what was planned for PFS4 ( if any ).


OFF TOPIC

MorphOS for classic how far can the Bvision be overclocked?

is it limited like in CyberGraph X for 68k to 100Mhz?

[Piru]

MorphOS for classic how far can the Bvision be overclocked?

Same as 68k really. It's a HW not SW limit.

[delshay]

Same as 68k really. It's a HW not SW limit.

in 68k the software is limited in speed due-to the *original hardware specs* 100Mhz,but my Bvisions are a little different and are *not normal* and are classed as *special*.

this tiime it`s the other way round it`s the software that limiting the speed of my card,so no one may know the answer unless the developer has written this into the software in MorhpOS.

no one will be able to test it beyond 100Mhz due-to the hardware,but this has now changed.

i don`t want to install MorphOS knowing it does not work beyond 100Mhz.

[Karlos]

The TVP4020 might not enjoy those sorts of speeds.

[delshay]

i say again my *Bvisions are not normal*.
 
here is a poor photo of my cards. the poor photo is to hide whats on the card.

http://www.amiga.org/gallery/index.php?n=3219

[NorthWay]

in 68k the software is limited in speed due-to the *original hardware specs* 100Mhz

This is interesting. Can you elaborate a bit?

[wawrzon]

This is interesting. Can you elaborate a bit?

can you please open another thread to advertise and dicuss on this matter?

[delshay]

This is interesting. Can you elaborate a bit?

NOTE: for some reason i can`t start my own thread it been this way for many months i don`t know why.

i don`t want to give to much away at this point but it is software thats stopping my card from going faster,all three cards are not normal standard Bvision.

[Karlos]

Posts moved to new thread

[delshay]

sorry to say,all projects have stopped this is for personal reasons and i don`t know if it will be restarted,the last update i done in the last few days worked fantastic.

there are a few things i do know about Blizzard cards which no one knows other than Phase 5 enginneers but this infomation i will keep to myself for now.

untill further notice all has stopped.

[Piru]

i don`t want to install MorphOS knowing it does not work beyond 100Mhz.

You're clearly better off not installing MorphOS.

[Karlos]

NOTE: for some reason i can`t start my own thread it been this way for many months i don`t know why.

i don`t want to give to much away at this point but it is software thats stopping my card from going faster,all three cards are not normal standard Bvision.

Have you replaced the TVP4020 with a different revision or something?

[Tension]

Have you replaced the TVP4020 with a different revision or something?

He doesn't want you to find out in case we start modding our own Amigas, undermining his pride thusly.

[delshay]

He doesn't want you to find out in case we start modding our own Amigas, undermining his pride thusly.

send me in your hardware to experiment on and i have no problems in releasing information
to all users. beware your hardware will not be the same if you want it to be returned.

all experiment/testing cost money and time and i need to see some kind of return for my work.

*Overclocking Bvision*

im not sure if this information is true but im going to post anyway.

Bvision/Cvision overclocking is limited to 100Mhz with Cybergraph X.

i think this limit can be changed in the Permedia 2 driver. the question is *who* can EDIT the Permedia 2 driver and change it.  i do belive it`s a small EDIT in the value.

whoever who can change the limit, it would be a good idea to PM me so i can test the new MAX limit.

[Cosmos Amiga]

80 < Meltdown < 100


Meltdown
 jsr -$60(a6) ; R_FindToolType (a0/a1) (d0)

 move.l d0,a3
 tst.l d0

 beq.b JL_0_12C6
 moveq #0,d7

 bra.b JL_0_1290

 JL_0_127C
 moveq #0,d0

 move.b (a3)+,d0
 move.l d7,d1

 asl.l #2,d1
 add.l d7,d1

 add.l d1,d1
 add.l d0,d1

 move.l d1,d7
 moveq #$30,d0

 sub.l d0,d7

JL_0_1290
 move.b (a3),d0
 moveq #$30,d1

 cmp.b d1,d0

 bcs.b JL_0_129E
 moveq #$39,d1

 cmp.b d1,d0

 bls.b JL_0_127C

JL_0_129E
 move.l d7,d0
 asl.l #6,d0

 sub.l d7,d0
 move.l d0,d1

 asl.l #5,d1
 sub.l d0,d1

 asl.l #3,d1
 add.l d7,d1

 asl.l #6,d1

 beq.b JL_0_12C6          ; nop = $4E71
 cmpi.l #$04C4B400,d1   ; nop = $4E71,$4E71,$4E71

 bcs.b JL_0_12C6          ; nop = $4E71
 cmpi.l #$05F5E100,d1   ; nop = $4E71,$4E71,$4E71

 bhi.b JL_0_12C6           ; nop = $4E71

 move.l d1,$34A(a5)      ; now with the nop => no check anymore

JL_0_12C6



The goal is to remove < 80 and > 100 Mhz checking !

I'm good with my nop ?

Other coders, please confirm ($04C4B400 = 80 Mhz and $05F5E100 = 100 Mhz)