PET 2001 Video Glitch Fix Board
- Category:
- Retro Computers >> Commodore >> Pet >> Hardware
- Listing type:
- Fixed Price Multiple Items
- Item Condition:
- New
- Seller location:
- Tynemouth, United Kingdom
- Ending in:
- 18 gün, 14h:48m:15s
- Quantity Available
- 3
- Latest buyer:
- g***w (3)
- Fixed price:
- £25.00
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VAT, Duty and handling fees may be payable on Price & Shipping on receipt - Shipping Costs:
- From only £5.00
- Payment methods:
- Paypal
- Number Sold:
- 2 (View history)
Buyer Value Date and hour Quantity bought g***w (3) £25.00 14/07/2024 08:51:26 1 m***h (2) £25.00 29/03/2024 12:42:32 1
Item Number : 64262
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tynemouthsw (117)
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Watch ItemDescription
This is a board which solves a problem sometimes seen on early model PETs, one of thin vertical lines appearing between some characters.
This can be seen most clearly as what appear to be spikes on top of one or both walls in 3D Monster Maze (https://tynemouth.itch.io/pet-3d-monster-maze) see photos for examples.
This fixes that issues by adding in a pixel clock synchronisation flip flop, so each pixel is samples in the middle and output. The output can only change ones per pixel clock, so the glitches are removed.
This replaces the 74LS08 chip in position E2 (next to the 6502). The original IC will need to be desoldered and a socket fitted (turned pin socket included). Desoldering on these boards is not for the faint hearted, it is very easy to lift tracks, so proceed with caution unless you are an experienced desolderer.
This is only suitable for the PET 2001 board, as shown in the photos. Not suitable for the 2001N or later.
If you have a PET ROM/RAM board installed, you will need to add an extra 40 pin IC socket into the stack to raise it sufficiently (not included).
This is for the assmebled unit only. No PET motherboards, PET ROM RAM boards or anything else is included.
More info on my blog:
http://blog.tynemouthsoftware.co.uk/2024/03/commodore-pet-2001-repair-part-3-video-glitch.html
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Shipping and Payment
- Item Location:
- Tynemouth, United Kingdom
- Shipping conditions:
- Buyer pays shipping expenses
- Shipping Costs:
-
- To United Kingdom :
- First Class Post : £5.00 For initial item, £0.50 Per additional item
- Special Delivery : £8.00 For initial item, £1.00 Per additional item
- First Class Signed For : £6.00 For initial item, £0.50 Per additional item
- To USA :
- Intl Signed For : £15.00 For initial item, £5.00 Per additional item
- Shipment terms:
- Sent as large letter. Signed for or special delivery recommended.
International orders may be subject to delays and additional customs fees. Please be aware of this before purchasing. - Payment methods:
- Paypal
The seller accepts all responsibility for this listing
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