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Old 30 July 2008, 16:28   #1
Toni Wilen
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Toss your Willem eprommers :)

Stupid title, I know but Willem eprommers are overrated.

I was really annoyed with Willem eprommer and slow KS EPROM programming.

They are slow, need adapter for 16-bit EPROMs, slow, not very reliable, very slow, parallel port, I think I didn't mention they are really slow?

I finally decided to buy this: http://www.mcumall.com/comersus/stor...idProduct=4256 ("randomly" chosen, it wasn't too expensive and had recently updated software)

- It is fast: 27c400 programs in 50s. 27c160 in 2min20s. Reading is even faster.
- USB (but needs separate 9V/600mA powersupply)
- Supports 16-bit EPROMs without adapter

(It also supports 1000s of other chips but it wasn't the important part)

Unfortunately it does not speed up slow UV-erasing
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Old 30 July 2008, 16:32   #2
coze
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you failed to mention it costs 4 times the price of willem.
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Old 30 July 2008, 16:34   #3
Toni Wilen
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Quote:
Originally Posted by coze View Post
you failed to mention it costs 4 times the price of willem.
You need also 16-bit adapter which isn't cheap and cheaper versions will also support 27c400s.
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Old 30 July 2008, 16:39   #4
coze
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sorry I won't toss my willem unless you toss me 150 bucks

I only program chips ... once a month or something ? so gain in speed does not justify the cost (for me). If you program chips everyday, it is another issue (but why ?).
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Old 30 July 2008, 16:43   #5
Toni Wilen
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Don't take it too seriously. I said I was annoyed with lack of speed and that Willem is overrated, not you
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Old 30 July 2008, 17:00   #6
wizard66
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I have a Willem PCB v4.5 and all works fine.
Speed is not a issue for me
The Willem is just fine, must be in the name because my First name is also Willem

Last edited by wizard66; 30 July 2008 at 17:10.
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Old 30 July 2008, 17:13   #7
Toni Wilen
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Nothing is fast enough for me

(I thought it was universally known already!)
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Old 30 July 2008, 18:15   #8
coze
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then make a 'wilen' eprommer and I'll toss my 'willem' eprommer (admit that this was a good one)
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Old 30 July 2008, 18:38   #9
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been looking for sources on if its possible to program Pal's and Gal's on my Williem pcb 4.5 any ideas, links or a flat no?
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Old 30 July 2008, 18:52   #10
gklinger
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Quote:
Originally Posted by coze View Post
you failed to mention it costs 4 times the price of willem.
A Willem only costs $45? The programmer Toni linked to only costs $180 which seems pretty reasonable. I guess my perspective is skewed by the positively ridiculous prices people are paying for Promenade C1s over in the 64 world.
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Old 30 July 2008, 19:04   #11
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yep. Though you also need to get the 16 bit rom adapter to burn amiga roms. still a bargain though.
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Old 30 July 2008, 20:21   #12
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any recomendations on a cheap PAL / GAL programmer?! JTAG would be nice too
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Old 30 July 2008, 20:30   #13
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Xilinx have a good USB JTAG programmer. Dunno the prices, but it is surely able to "converse" with any JTAG device.
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Old 31 July 2008, 10:57   #14
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Toni,

That is the Wellon VP-380. Would not the Wellon VP-280 also do? That is the lower model but from my very limited understanding it still does much the same things, including the 27C400 without adapter. I have seen it on ebay for $US100 + postage.

From your linked website:
http://www.mcumall.com/comersus/stor...idProduct=4255

Their website homepage which you probably already know is:
http://www.weilei.com.cn/indere.htm

Is there anything the Willem can do that these can't?

Also, what do you guys use to erase the EEPROMs with UV?
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Old 31 July 2008, 11:15   #15
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To erase eeproms i got one from china for around £10 including posting

(clicky to see BIN auction)


Also SIVAVA also stock these at a slighty higher price (although outa stock atm)


I found that 27c4xxx seris can take upto 30 mins to blank, 27c8xxx can take from 30 mins to an hour pending on age and the lower end 27c128/256/512 around 20 mins tops.
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Old 31 July 2008, 11:23   #16
TheCorfiot
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@Zetro

Thats Exactly the same Eraser I got too
2 yrs old & still going strong not bad for a Tenner

TC
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Old 31 July 2008, 11:26   #17
Zetr0
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A fantastic well spent £10 it was too

before i was using one of them pedicure uv setting nail varnish thingy, that kept turning off every 6 minutes LOL.... well that was untill i hacked the timer!!!

heres one for around £10 and it doesn't have a timer

(click for BIN linky)


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Old 31 July 2008, 16:27   #18
Toni Wilen
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Quote:
Originally Posted by Calgor View Post
That is the Wellon VP-380. Would not the Wellon VP-280 also do? That is the lower model but from my very limited understanding it still does much the same things, including the 27C400 without adapter.
Yes but I chose 380 because price difference was so small. Interestingly VP180 also supports 27C400 but not 27C800/27C160 or 27C322.

Quote:
Also, what do you guys use to erase the EEPROMs with UV?
Image attached. Quite basic but works
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Old 31 July 2008, 18:33   #19
Calgor
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Thanks for the info guys. So does anyone have a list of EEPROMs etc that would be useful for Amigas?

Are there alternatives to the 27C400? (I thought there are possibly larger ones that can be used - 27C800?). The other ones Toni listed above I have no idea what they could be used for. Some parts listing have a 27C4001 - what does the extra "1" mean? Is there some guide somewhere? Does the brand of e.g. the 27C400 matter as well? Are some able to handle the faster 160ns vs 200ns timing that can be set via e.g. the A4000 motherboard jumper?

What other uses can be made of using EEPROMS!? I want to see if one of these programmers is worth getting.

A recommended place to get the EEPROMs would be great too.
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Old 31 July 2008, 18:53   #20
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EEPROM Speeds
All i can say is keep it under <120ns for any amiga!
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