GBA1000 New board production (V4)

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22nd March 2013, 23:36
optiguy

count me in as well
23rd March 2013, 00:00
bitcpy

You can count me in on whatever group buys we can organize.

You are doing everyone a great service by buying in bulk and saving us from having to hunt and peck around to find these pieces one at a time.

Quote:

Originally Posted by kipper2k

I just got an email from someone on Ebay that is willing to sell me 50 Motorola XC68882RC33A FPU's for $25 US and cutting me some slack on the mailing costs.... I think this is a great deal for the 68882 33mhz FPU. It is cheaper than the quote i received for the 68881's

So.... my question is, How much interest is there for people to buy the FPU. I can get the socket for them for $5 each so i think it is a good deal. He is selling them on ebay for about $48 US incl shipping so i think it is a perfect chance at doing a group buy and saving cash... let me know if you are interested, if there is enough i can bundle it with the Gals...

my price would be $27 (US) once i get them here after duties, shipping etc
23rd March 2013, 01:36
Serpico_One

2xFPU + Sockets for me too...
Thanks![COLOR="Silver"]
23rd March 2013, 01:59
nick123

Hi kipper2k
i bought webmany board please see http://www.amibay.com/showthread.php?t=42788
i would also like to buy:

1 x mc6803050 cpu = $35
1 x CPU socket = $5
4 x chip mem = $5.92
16 x fast ram = $27.04
1 x zorro2 socket = $1
2 x video hybrid complete = $22
2x Video hybrid mobo 22 pin header = $2
1 x MSM6242B RTC clock = $4.50
1 x agnus = $9.50
1 x osc28.375 mhz = $4,75
1 x TSOP + fitting = $3.50
Im also interested in the FPU (68882) + socket + gals

I would also like small packet delivery to the UK

After you get confirmation from webmany, im happy to pay for the above components / delivery.
If you have run out of any stock its no problem and if you are going to buy more than i will wait if not please advise.
Are all the prices in CAD $ (except the fpu) or US$?
23rd March 2013, 03:19
webmany

Kipper2k, you have a pm.
23rd March 2013, 06:16
Buzzfuzz

I'm interested in the complete list as well and also the fpu+socket+gal's.
http://www.kipper2k.com/gb1000parts.htm
23rd March 2013, 08:44
gseb

I am interested in FPU and the socket too
23rd March 2013, 09:06
Slayer

Quote:

Originally Posted by kipper2k

I just got an email from someone on Ebay that is willing to sell me 50 Motorola XC68882RC33A FPU's for $25 US and cutting me some slack on the mailing costs.... I think this is a great deal for the 68882 33mhz FPU. It is cheaper than the quote i received for the 68881's

So.... my question is, How much interest is there for people to buy the FPU. I can get the socket for them for $5 each so i think it is a good deal. He is selling them on ebay for about $48 US incl shipping so i think it is a perfect chance at doing a group buy and saving cash... let me know if you are interested, if there is enough i can bundle it with the Gals...

my price would be $27 (US) once i get them here after duties, shipping etc

I'll be delighted to join in and buy 2x 68882 33MHz + 2 x associated sockets

:thumbsup:
23rd March 2013, 10:31
Massimo_It

The Gba1000 board under construction have a MC68030RC50B and i think that this and the board itself work at 50 Mhz, right?
With the XC68882RC33A must down the frequency of the board at 33 Mhz or run the FPU at 50 Mhz overclocked?
23rd March 2013, 13:07
kipper2k

Quote:

Originally Posted by Massimo_It

The Gba1000 board under construction have a MC68030RC50B and i think that this and the board itself work at 50 Mhz, right?
With the XC68882RC33A must down the frequency of the board at 33 Mhz or run the FPU at 50 Mhz overclocked?

We need a guru to answer that one ?
23rd March 2013, 14:17
CUF85

Reading the documentation, it says the that the fpu doesn't need it's own oscillator because it will use the one for the cpu. So i'm thinking it should be a 68881-2 50mhz.
23rd March 2013, 14:55
BloodyCactus

and the 50mhz cpu needs a 100mhz oscillator.
23rd March 2013, 15:05
kipper2k

Quote:

Originally Posted by BloodyCactus

and the 50mhz cpu needs a 100mhz oscillator.

Why does the documentation show 50mhz cpu and 48mhz oscillator ?
23rd March 2013, 15:49
CUF85

Maybe someone should ask Mr Braun to clarify this? Because he said on eab that the CPU needs a 100mhz oscillator. This is what illuwatar writes on his site. "FPU: Motorola MC68881 or MC68882 at CPU-speed".
23rd March 2013, 16:05
BloodyCactus

Quote:

Originally Posted by kipper2k

Quote:

Originally Posted by BloodyCactus

and the 50mhz cpu needs a 100mhz oscillator.

Why does the documentation show 50mhz cpu and 48mhz oscillator ?

GB said the rev4 board, CPU runs at 1/2 osc speed. dont know what the 48mhz is for.

http://eab.abime.net/showpost.php?p=...&postcount=208
23rd March 2013, 16:26
kipper2k

Quote:

Originally Posted by BloodyCactus

Quote:

Originally Posted by kipper2k

Quote:

Originally Posted by BloodyCactus

and the 50mhz cpu needs a 100mhz oscillator.

Why does the documentation show 50mhz cpu and 48mhz oscillator ?

GB said the rev4 board, CPU runs at 1/2 osc speed. dont know what the 48mhz is for.

http://eab.abime.net/showpost.php?p=...&postcount=208

k, I will pick up some 100mhz oscillators... i can get them for $3 each + shipping
23rd March 2013, 17:37
Massimo_It

Hi

If the board rev4 halves the clock and we put an oscillator at 100 Mhz, the FPU at 33 Mhz is out of his operating range.
As CUF85 notes illuwatar writes on his site that the FPU: Motorola MC68881 or MC68882 run at CPU-speed.
If we run the CPU at 50 Mhz with an hypothetical XC68882RC33A FPU, i don't know if the FPU holds the speed (overclocked +50%).
23rd March 2013, 18:14
webheadx1

the fpu will overclock to 50mhz but i cant remember what speed does overclock to 50mhz , maybe we need somebody who has done this on accelerators ,or we ned to buy 50mhz, but i do know the 68882 will overclock.
24th March 2013, 00:24
FriendlyFire

Hi kipper,
If possible I would like to buy the gal's and the fpu + socket, too.
Thank you.
24th March 2013, 04:39
stealth7o2

I'd be interested in a FPU, Socket, oscillators and gal.. hoping that it all works at 50Mkz
24th March 2013, 08:56
V0yager

Kipper2k: I am interested in fpu, socket and GALs too. Thanks.
24th March 2013, 10:39
ws1968

I am interested in fpu, socket and GALs.
24th March 2013, 10:53
Hypnosis

Kipper: interested in FPU, Socket and GALs
24th March 2013, 11:02
oldman1000

Kipper2k: I am interested in fpu, socket and GALs
25th March 2013, 11:44
Massimo_It

@Kipper2k

I'm interest in Gals and oscillator.
25th March 2013, 13:28
musashi

@kipper2k

Interested in the gals too.
25th March 2013, 14:12
CUF85

@kipper

Gals for me too!
25th March 2013, 14:24
DutchinUSA

Since I guess we are declaring interest in gals :D

Gals for me also please :thumbsup:
25th March 2013, 15:26
croupier

Pls add me for a FPU socket and the GALS....

Thanks!
25th March 2013, 16:16
klx300r

@kipper2k

sure of course for me too..gals, pals, sockets, extenders whatever you can get for us that I haven't already paid for :thumbsup:
25th March 2013, 16:30
webheadx1

interested in gals osc,sockets? not the fpu though i dont need it really.

whens the eta on the boards im excited.
25th March 2013, 16:45
kipper2k

Quote:

Originally Posted by webheadx1

interested in gals osc,sockets? not the fpu though i dont need it really.

whens the eta on the boards im excited.

Hi,

Payment went through on 15th Mar, leadtime is 16 days (business days) so they should be on their way to me Mon 8th April. I'd wish the time to go faster but i'm getting too old now to speed up time :)
25th March 2013, 20:03
webheadx1

lol cool i cant wait but ill have too , its going to be fun. i hope mine works first time lol.
25th March 2013, 20:36
Cryton

@Kipper - interested in a FPU, Socket, oscillators and gal's and as always anything else you manage to find ;P .

Cryton

---------- Post added at 20:36 ---------- Previous post was at 20:36 ----------

Opps for got to add

Is there a socket for the oscillator too ? And did anybody manage to find out what speed we needed ?

Anybody had any thoughts on case's, i get a feeling A1000 one will become scarce .... much as i'd love one. If I can't find one maybe something like the minimig would look cool .... not sure how the zoro would work though :unsure:

Cryton
26th March 2013, 01:03
klx300r

Not sure if this has been asked before but is there a clock port on our boards or can we add one?
26th March 2013, 01:23
kipper2k

Quote:

Originally Posted by Cryton

@Kipper - interested in a FPU, Socket, oscillators and gal's and as always anything else you manage to find ;P .

Cryton

---------- Post added at 20:36 ---------- Previous post was at 20:36 ----------

Opps for got to add

Is there a socket for the oscillator too ? And did anybody manage to find out what speed we needed ?

Anybody had any thoughts on case's, i get a feeling A1000 one will become scarce .... much as i'd love one. If I can't find one maybe something like the minimig would look cool .... not sure how the zoro would work though :unsure:

Cryton

I found some oscillator sockets, i think they were about $0.60 each, i am still waiting to see if i can get a better price (each board needs 2)
26th March 2013, 01:44
oldman1000

will there be a second list of components you may purchase ?

fpu ,gal ,oscillator,socet and more
27th March 2013, 12:58
kipper2k

Quote:

Originally Posted by oldman1000

will there be a second list of components you may purchase ?

fpu ,gal ,oscillator,socet and more

I'll do another bulk buy, once i get these orders out.. I dont want to start too many things on the go at the same time, gets too confusing
27th March 2013, 13:52
webheadx1

anybody working on a power supply connector , i got a 500 power socket just wondered if i can connect that to the gba then use a power brick off the 500 , anyone got any ideas? like what type of connector for the board? 1 that can be wired to the socket easy and looks good job.
27th March 2013, 17:51
Massimo_It

Quote:

Originally Posted by webheadx1

anybody working on a power supply connector , i got a 500 power socket just wondered if i can connect that to the gba then use a power brick off the 500 , anyone got any ideas? like what type of connector for the board? 1 that can be wired to the socket easy and looks good job.

I think to use a molex 3.96mm (.156") Pitch KK® Solid Header 41791 with 7 pin, if it is not equal to the original is close enough.
An original A1000 board needs a tick signal to work correctly, in the gba1000 board i don't known but has the same connector of A1000 board..
The A2000, A3000 and A4000 can do without a tick signal moving a jumper, A1000 not as far as I know.
If Gba1000 board needs a tick signal, the A500/A6000/A1200 PSU is useless without a signal tick generator that would also with AT/ATX PSU adaptation.
Aminet has some project to do a signat tick generator.
27th March 2013, 20:11
webheadx1

so thats going to make it a pig then , damn so what your saying is no power supply has a tick signal?

so where all going to be stuck then until we have worked this out bummer.
27th March 2013, 20:44
CUF85

In my opinion, this motherboard is shaped like an a1000 but it's not one. So i assume that an ordinary psu will work. I haven't read anything about a tick signal in the docs. But i can be wrong too.
27th March 2013, 21:48
BLTCON0

The schematics available here show support for the PSU tick signal (page 5).
They also show (page 3) that vsync can be used instead (jumper selection).
So either option is available, just like in the A2000.
These are older schematics but I doubt the V4 design would ditch that convenience.
27th March 2013, 22:11
CUF85

So either can be used. Good news.
28th March 2013, 06:50
Jawd

I just read the German manual and the schematics for the rev.4 board and the tick signal can be used from either the psu or from the v-sync.

Quote:

Originally Posted by From Manual

Über den Jumper X16 kann dem CIA IC40 das TICK-Signal (Jumper rechts) oder das /VSYNC-Signal (Jumper links) zugeführt werden. Dieses 50Hz Signal wird für die interne Signalverarbeitung des Custom-Chip-Systems benötigt und wurde beim A1000 über das Netzteil als TICK-Signal zur Verfügung gestellt. Bei den nachfolgen- den Modell wurde dann das /VSYNC-Signal benutzt. Das A1000 Mainboard arbeitet mit beiden Einstellungen. Sollte das Netzteil kein TICK-Signal zur Verfügung stellen (z.B. Austauschnetzteil) ist die Einstellung /VSYNC zwingend erforderlich.
28th March 2013, 11:07
Slayer

This is all getting a little confusing for me now since I am too busy to check on this thread. Last time I said anything was in relation to FPU and err 68882? Don't let me get left behind please, but remember, I need enough for 2 boards worth :-)
28th March 2013, 12:55
webheadx1

hi george told me you just set the jumper ,x16 so you dont need tick clock so now can use anything really to power it yipe.
28th March 2013, 18:50
bjavor

I've seen various references to some German language detailed pdf about the board but can't seem to be able to find it. Could someone send me a link please?
29th March 2013, 00:43
kipper2k

Here is the info on the Video Hybrid module i made, People who are buying this as a kit will definately need this.

here's the links to the placement

http://www.kipper2k.com/amiga/videoh...dhybridtop.pdf
http://www.kipper2k.com/amiga/videoh...dhybridbot.pdf

Here's the BOM

Part Value Device Package Description
C1 0.1u C-USC0805 C0805 CAPACITOR,
C2 0.1u C-USC0805 C0805 CAPACITOR,
C3 0.1u C-USC0805 C0805 CAPACITOR,
C4 0.1u C-USC0805 C0805 CAPACITOR,
C5 0.1u C-USC0805 C0805 CAPACITOR,
Q1 MMBT3904LT1-NPN-SOT23-BEC SOT23-BEC NPN Transistror
Q2 MMBT3904LT1-NPN-SOT23-BEC SOT23-BEC NPN Transistror
Q3 MMBT3904LT1-NPN-SOT23-BEC SOT23-BEC NPN Transistror
Q4 MMBT3904LT1-NPN-SOT23-BEC SOT23-BEC NPN Transistror
Q5 MMBT3904LT1-NPN-SOT23-BEC SOT23-BEC NPN Transistror
Q6 3906LT1SMD MMBT3906LT1SMD SOT23-BEC PNP Transistror
R1 1k R-US_M0805 M0805 RESISTOR,
R2 2k R-US_M0805 M0805 RESISTOR,
R3 4.02k R-US_M0805 M0805 RESISTOR,
R4 8.02k R-US_M0805 M0805 RESISTOR,
R5 470 R-US_M0805 M0805 RESISTOR,
R6 390 R-US_M0805 M0805 RESISTOR,
R7 75 R-US_M0805 M0805 RESISTOR,
R8 75 R-US_M0805 M0805 RESISTOR,
R9 1k R-US_M0805 M0805 RESISTOR,
R10 2k R-US_M0805 M0805 RESISTOR,
R11 4.02k R-US_M0805 M0805 RESISTOR,
R12 8.02k R-US_M0805 M0805 RESISTOR,
R13 470 R-US_M0805 M0805 RESISTOR,
R14 390 R-US_M0805 M0805 RESISTOR,
R15 75 R-US_M0805 M0805 RESISTOR,
R16 75 R-US_M0805 M0805 RESISTOR,
R17 1k R-US_M0805 M0805 RESISTOR,
R18 2k R-US_M0805 M0805 RESISTOR,
R19 4.02k R-US_M0805 M0805 RESISTOR,
R20 8.02k R-US_M0805 M0805 RESISTOR,
R21 470 R-US_M0805 M0805 RESISTOR,
R22 390 R-US_M0805 M0805 RESISTOR,
R23 75 R-US_M0805 M0805 RESISTOR,
R24 75 R-US_M0805 M0805 RESISTOR,
R25 1k R-US_M0805 M0805 RESISTOR,
R26 220 R-US_M0805 M0805 RESISTOR,
R27 27k R-US_M0805 M0805 RESISTOR,
R28 150 R-US_M0805 M0805 RESISTOR,
R29 75 R-US_M0805 M0805 RESISTOR,
R30 90.9k R-US_M0805 M0805 RESISTOR,
R31 37.4k R-US_M0805 M0805 RESISTOR,
R32 13.3k R-US_M0805 M0805 RESISTOR,
R33 6.04k R-US_M0805 M0805 RESISTOR,
R34 37.4k R-US_M0805 M0805 RESISTOR,
R35 19.6 R-US_M0805 M0805 RESISTOR,
R36 270 R-US_M0805 M0805 RESISTOR,
R37 36 R-US_M0805 M0805 RESISTOR,
R38 36 R-US_M0805 M0805 RESISTOR,
R39 75 R-US_M0805 M0805 RESISTOR,

All resistors are of the thick film type and 1% tolerance.
29th March 2013, 00:59
CUF85

Nice one kipper!!

Can't wait to make these.

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