Recent content by Stedy

Hi, The new website is up and running at long last and the sales have been restored, you can order direct. http://ianstedman.co.uk/shop/ I ship 1 or 2 days a week only at the moment.

Have you tried moving the Video mode switch? https://www.manualslib.com/manual/1338750/Commodore-1084.html?page=5#manual Hope I've got the right variant.

Hi, You need to connect /A7 from IC1D to pin 24 (/CS1) of the 6522, without this the 6555 will not be addressed. You will also need some logic to connect /IOSELECT and A5 to CS0 of the sound ships, tieing CS to VCC will fail. You need an 7400 NAND gate with a spare inverter on /IOSELECT so that...

I saw the errors and fixed them. Needed to keep occupied whilst waiting for the weather around Table Mountain to clear (has just cleared). Added copper pours on VCC and GND, connected the extra un-used ground pins as leaving them hanging causes weird stuff to happen inside the device. C1 and C4...

Hi, The title says it all. To get two of my Amiga back up and running I need two items: A UK Amiga 600 Keyboard, not too worried about the keys as the cable on mine broke, keys are intact. The FFC cable that connects the CD32 main board to the CD-ROM. Kinda need this for another project. I...

Hi, The JST-XH 8 way fits the P11 connector. Search ebay for a 7S LiPo balance lead. Ian

To make DF0:/DF1: switchable with a real drive has a slight complication. You need a Motor ON signal. Swapping SEL0/SEL1 for a Gotek or HXC drive is easy, that's all they use. The A500/A600/A1200 have SEL0/SEL1 on the internal floppy cable but crucially, only MTR0 (MOTORON on A500). This enable...

Hi, No chance of identifying the burnt out part. Is this your Pong console PCB? http://www.ukvac.com/forum/uploads/1301/pong_201_top.JPG If it is, where was it located? Ian

Hi, The MC68040 requires PCLK/BCLK with a maximum rise/fall time of 3ns, the IQD oscillators you link to have maximum rise times of 4ns. IT might start ok but as things heat up, it could drift out. Motorola/Freescale microprocessors are fussy on oscillator rise fall/times. Datasheets here...

Subject to payment, the first 3 books have been sold and the original post updated. I'm not addicted to web forums :unsure:

I've responded to Acid first with the postage costs for the first 3 books (Mastering Amiga programming secrets & Amiga programmers handbook vol 1/2). The others are still available. Had not realised the latest Royal Mail pricing changes so they do get expensive to post, more than 2 Kg is...

Hi, Having a sort out of some of my books and have a few Amiga related items I no longer need. The books are free, just want the postage and packaging costs. From the UK, small parcel costs from £3.50 and for overseas it starts at £4.00, depending on weight. Contact me for details. Books...

Hi, If you can locate the BIOS ROM for your card, you can use NVFlash to load it, details here: http://www.tomshardware.co.uk/faq/id-1872554/flash-gpu-bios-nvflash.html This will restore the card to default memory timings. You must be 100% certain you have the correct BIOS ROM first, a wrong...

To reflow lead free solder you need a controlled ramp up to 260C, more than most domestic ovens can goto. If you put the card in the pre-heated 190C oven, you severely thermally shocked the card, potentially damaging the PCB. The original issue you describe was caused by issues with the...

Just noticed this, should pay more attention :roll: If there is a 2nd one, would be interested, I'm in SE London, so not far. Unfortunately 1st Feb is already booked. Ian