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Make this my favourite Sinclair QL JS ROM QDOS Operating System chip set

Retro Computers >> Sinclair >> Sinclair QL >> Components
Listing type:
Fixed Price Multiple Items
Item Condition:
Seller location:
Stoke-on-Trent, Staffordshire, United Kingdom
Ending in:
27 days, 14h:08m:21s
Quantity Available
Latest buyer:
m***y (4)
Fixed price:
£15.00 Buy now!
Number Sold:
8 (View history)
Buyer Value Date and hour Quantity bought
m***y (4) £15.00 22/03/2017 08:47:50 1
m***5 (2) £15.00 16/03/2017 16:38:14 1
C***n (3) £15.00 05/10/2016 09:12:13 1
q***a (2) £15.00 23/09/2016 18:24:19 1
w***7 (4) £15.00 17/09/2016 21:29:41 1
h***n (14) £15.00 24/02/2016 23:41:39 1
c***3 (31) £15.00 09/11/2015 21:36:20 1
r***t (18) £15.00 05/11/2015 10:21:25 1
Shipping Costs:
From only £1.75
Payment methods:
Paypal, Bank transfer
Feedback on this Item
PositivePositive q***a (2) Ok Rich, the chip set is received. Now I have no time to test it, but I'm sure that all will work perfectly! 05/10/2016 16:46:05
PositivePositive h***n (14) Thank you very much Rich 28/02/2016 11:46:21
PositivePositive c***3 (31) Transaction parfaite !!!!!!!!!!!!!!!!! Merci. 21/11/2015 20:31:24
PositivePositive r***t (18) Thank you for going the extra mile! 11/12/2015 11:52:58

Item Number : 3820

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Fixed price: £15.00
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This is the two chips which contain the JS ROM operating system for the UK Sinclair QL.

JS was the last official UK version of the QDOS operating system, devised by Tony Tebby for Sinclair Research's Sinclair QL home computer.  The earlier ROM versions included JM, FB and AH ROMs.

The JS ROM was the first version of QDOS to incorporate the WHEN variable and WHEN Error commands for watching variables and trapping errors properly.  It also overcame the main limitation with the JM ROM in that you did not have to enter NEW when you had loaded a toolkit into memory.

In Europe, this ROM was only superceded by the official MG ROM set.

Fully working and in excellent condition

-- Buy in confidence from RWAP Software - supporting the Sinclair QL since 1987 --

Questions and Answers

Shipping and Payment

Item Location:
Stoke-on-Trent, Staffordshire, United Kingdom
Shipping conditions:
Buyer pays shipping expenses
Shipment fee:
  • To United Kingdom :
  • First Class Post : £1.75 For initial item, £0.50 Per additional item
  • To EU :
  • Airmail Post : £3.40 For initial item, £0.55 Per additional item
  • To Rest of Europe :
  • Airmail Post : £3.40 For initial item, £0.55 Per additional item
  • To Americas :
  • Airmail Post : £4.20 For initial item, £0.60 Per additional item
  • To Rest of World :
  • Airmail Post : £4.20 For initial item, £0.60 Per additional item
Shipment terms:

Items normally shipped within 1 working day of payment being received - please ask if you want it sent recorded delivery.

Payment methods:
Paypal, Bank transfer

The seller accepts all responsibility for this listing

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