econet
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econet [2013-09-20 10:47] – created tim | econet [2013-09-22 12:44] – [Model B Upgrade Kit] tim | ||
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===== Components ===== | ===== Components ===== | ||
- | * Econet clock unit. One required for each network, to generate the timing signal. We can buy this for £50, or make it ourselves with reasonably basic components. | + | * Econet clock unit. One required for each network, to generate the timing signal. We can buy this for [[http:// |
- | * For each BBC Model B client: a kit of components to be soldered onto the motherboard. Kits can be bought for £30, or we can source the parts ourselves (though one IC is very rare). | + | * For each BBC Model B client: a kit of components to be soldered onto the motherboard. Kits can be bought for [[http:// |
- | * For each BBC Master: an Econet daughterboard and ROM. Cost is £30. We can also use an Archimedes Econet board available for £10, and burn our own ROM. | + | * For each BBC Master: an Econet daughterboard and ROM. Cost is [[http:// |
- | * For each Acorn Archimedes: an Econet daughterboard and 9-pin-to-5-pin cable. Available for £10-20. Archimedes daughterboards can be used in the BBC Master, but BBC Master daughterboards are too large for the Archimedes. | + | |
* M-M 5-pin DIN (180 degrees) cables. One per client, and one between each junction box. MIDI cables can be used, as long as they are fully-wired (all 5 pins). | * M-M 5-pin DIN (180 degrees) cables. One per client, and one between each junction box. MIDI cables can be used, as long as they are fully-wired (all 5 pins). | ||
* Passive terminators (male 5-pin DIN with some resistors/ | * Passive terminators (male 5-pin DIN with some resistors/ | ||
* Junction boxes. Three or more DIN sockets connected in a short-chain. The backbone (or terminator) is connected at either end of the chain, and one or more clients connected in the middle. | * Junction boxes. Three or more DIN sockets connected in a short-chain. The backbone (or terminator) is connected at either end of the chain, and one or more clients connected in the middle. | ||
* File server: Level 1 (very basic) can be run on any BBC with a floppy. Level 2-3 require a second processor (which we have). Archimedes can also act as a file server with some free software. | * File server: Level 1 (very basic) can be run on any BBC with a floppy. Level 2-3 require a second processor (which we have). Archimedes can also act as a file server with some free software. | ||
+ | |||
+ | ===== Model B Upgrade Kit ===== | ||
+ | |||
+ | ^ Quantity ^ Part ^ Supplier ^ | ||
+ | | 3 | 1K 0.25W 10% resistor | | | ||
+ | | 3 | 1M5 0.25W 10% resistor | | | ||
+ | | 1 | 1K 0.25W 2% resistor | | | ||
+ | | 1 | 1K5 0.25W 2% resistor | | | ||
+ | | 4 | 10K 0.25W 2% resistor | | | ||
+ | | 4 | 56K 0.25W 2% resistor | | | ||
+ | | 4 | 100K 0.25W 10% resistor | | | ||
+ | | 1 | 22K x8 resistor pack | (to be identified from motherboard/ | ||
+ | | 1 | 2.2nF ceramic capacitor | | | ||
+ | | 1 | 10nF ceramic capacitor | | | ||
+ | | 1 | 10uF tanalum capacitor 6.3v | | | ||
+ | | 1 | 100pF ceramic capacitor | | | ||
+ | | 1 | 74LS74 | Farnell 1105907 £0.51 | | ||
+ | | 1 | 74LS132 | Farnell 1470858 £0.54 | | ||
+ | | 1 | 74LS244 | Farnell 1739688 £0.72 | | ||
+ | | 1 | 75159 | (£3.80 from ebay, £3.17 from digikey, £3.13 from mouser) | | ||
+ | | 1 | 68B54 | (obsolete item, ordered from ebay by Al) | | ||
+ | | 2 | LM319 | Farnell 1094247 £0.80 each (until stock exhausted, then 9487581 £2.15 each) | | ||
+ | | 1 | 74LS163 | Farnell 1470787 £0.66 | | ||
+ | | 1 | 74LS123 | Farnell 1470902 £0.38 | | ||
+ | | 1 | 2764 EPROM | (will use old EPROM from Hacklab stock) | | ||
+ | | 1 | 5-pin DIN PCB socket | (footprint to be identified from Model B motherboard) | | ||
+ | | 1 | 8-way wafer plug | (looks like header pins and jumpers) | | ||
+ | | 7 | mini-shunts | (to be identified) | | ||
===== Econet LAN Party ===== | ===== Econet LAN Party ===== |
econet.txt · Last modified: 2015-10-05 15:55 by 127.0.0.1