Sinclair ZX Spectrum Pentagon 128 AY-3-8910 & SRAM 512kb PCB
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- Retro Computers >> Sinclair >> Sinclair ZX Spectrum >> Hardware >> General / Add-Ons
- Listing type:
- Fixed Price Multiple Items
- Item Condition:
- New
- Seller location:
- Khabarovsk, Khabarovskiy kray, Russian Federation
- Ending in:
- 18 days, 04h:36m:06s
- Quantity Available
- 5
- Fixed price:
- US$50.00
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VAT, Duty and handling fees may be payable on Price & Shipping on receipt - Shipping Costs:
- From only US$12.00
- Payment methods:
- Paypal
- Number Sold:
- 0 (View history)
Item Number : 39951
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Description
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1.
ZX Spectrum Pentagon 128Kb AY - Modified Board of a popular retrocomputer Zx Spectrum Pentagon 128. There is a place to install a molex connector to power the computer from a modern power supply unit from a PC.
Onboard there is a built-in music processor, as well as 2 connectors for a modern drive and a molex power connector. There is also a place to install a molex connector to power the computer from a modern power supply unit from a PC
The diameter of vias is reduced to 0.4 mm and hidden under the mask
Integrated AY-3-8910.
Integrated port Kempston.
Added block capacitors in SMD version on the back of the board.
The printer's ROM has been converted to a test one, with the main ROM being switched by a jumper that is located near the drive connector.
Rewriting resistive assembly on the processor data bus with a + 5V pin on the edge, not on the center.
Added screen for quartz 8 MHz.
Improved power bus.
Added mounting holes.
Unconnected inputs of microcircuits are pulled up to + 5V.
PCB covered with blue solder mask and silk-screen printing
Added mounting field to install molex type connector for floppy disk power supply
Added pins for installing SMD tantalum capacitors on the power bus
Added pins for installing SMD components instead of pinouts
etc
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2.
512 KB SRAM for Pentagon 128 (expandable memory)
SRAM 512 module board for memory expansion of ZX Spectrum Pentagon 128 up to 512kb. One BS62LV4006 static memory chip is used instead of 16 RU5. The module is installed in the memory slots of your computer. Only the board is sold. There are 2 errors on the board - 2 contacts are covered with a mask, the mask must be removed and the holes drilled with a 0.8mm drill
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Shipping and Payment
- Item Location:
- Khabarovsk, Khabarovskiy kray, Russian Federation
- Shipping conditions:
- Buyer pays shipping expenses
- Shipment fee:
-
- To Russian Federation :
- Second Class Signed For : US$12.00 For initial item, US$9.00 Per additional item
- To EU :
- Courier : US$34.90 For initial item, US$9.00 Per additional item
- To Europe (Non EU) :
- Courier : US$34.90 For initial item, US$9.00 Per additional item
- To Americas (Non USA) :
- Courier : US$34.90 For initial item, US$9.00 Per additional item
- To Rest of World :
- Courier : US$34.90 For initial item, US$9.00 Per additional item
- To USA :
- Courier : US$34.90 For initial item, US$9.00 Per additional item
- Shipment terms:
- Not specified
- Payment methods:
- Paypal
The seller accepts all responsibility for this listing
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