Bits Of The Golden Age | Administrator | Activity https://bitsofthegoldenage.org/members/administrator/activity/ Activity feed for Administrator. Thu, 09 Apr 2026 16:10:57 -0800 https://buddypress.org/?v= en-US 30 hourly 2 d48eee3882422123a950509957f8ceb0 Administrator wrote a new post http://bitsofthegoldenage.org/?p=40616 Sun, 12 Jul 2020 23:55:13 -0800 Well, I really pulled a boner by not reading the RTC specification sheet for the SPIO board and it came back to bite me.

Since I was going to submit boards in a couple of days, I did a quick design and layout of […]

]]> 0980f6b9e1488c9dbb63961f61dbdc89 Administrator wrote a new post http://bitsofthegoldenage.org/?p=40602 Sun, 12 Jul 2020 23:00:38 -0800 An easy derivative of the SPIO (Serial, Parallel I/O) board is a version that has an I2C controller in place of the I/O port expansion header.   So introducing the Serial, Parallel, I2C (SPI2C) SBC-85 b […]

]]> 84ef5da2d10188a362888a9144007189 Administrator wrote a new post http://bitsofthegoldenage.org/?p=40553 Thu, 02 Jul 2020 00:53:55 -0800 The Digital I/O Port prototyping boards have arrived an they look good so I am releasing the build files on the Documentation page. Schematics here and build files here.

]]> c7e221ccb06b2c4a8e93f178973a23f1 Administrator wrote a new post http://bitsofthegoldenage.org/?p=40353 Mon, 01 Jun 2020 00:26:01 -0800 UPDATE: The SBC-85 CPU v2 is now available.
Those that do not have 21V programmers for the 2732A, or those running CP/M and other high memory requirements can rejoice. Version 2.0 (previously identified as […]

]]> 8f06739f67a8c748db7facb652ae4e6d Administrator wrote a new post http://bitsofthegoldenage.org/?p=40344 Sun, 31 May 2020 00:55:55 -0800 During assembly or development of a bubble memory system, it is safer and more convenient to use a dummy load rather than the actual 7110 bubble device.  In their BPK72 bubble demonstration kit, Intel include […]

]]> da6520723bbe47e2e9f0c121552350fd Administrator wrote a new post http://bitsofthegoldenage.org/?p=40329 Mon, 25 May 2020 22:34:40 -0800 The 7110A 1Mbit bubble board is on Tindie for purchase. This board will also work with the 7110AZ but you must lift pin 13 up from the socket since the pinout is different for the ‘Z’ version of the chip. The […]

]]> 5f99e79490b9b4895cc26c19bc450be4 Administrator wrote a new post http://bitsofthegoldenage.org/?p=40297 Sat, 16 May 2020 18:49:02 -0800 Hey-laaaaa. Day-laaaaaa. My bubble’s backA quick update on the 7110A bubble board that arrived from the PCB fab shop and is now under test. This version of the board uses the much more common 7110A 20-pin version […]

]]> 3a327eec1b21bf953efd8233a609f3c3 Administrator wrote a new post http://bitsofthegoldenage.org/?p=40277 Sat, 16 May 2020 16:57:30 -0800 Additional memory is always useful, so one of the next projects is a memory expansion board. It has been designed and a prototype laid out to be submitted with the next shop order. Here is a heads-up of its […]

]]> 7860024f0f47a32d0ae60b0430238b63 Administrator wrote a new post http://bitsofthegoldenage.org/?p=40211 Sat, 11 Apr 2020 01:04:01 -0800 Populating the SBC-85 1 megabit bubble memory board was straightforward, firing it up only slightly more complicated. I found that two pins on the KiCAD device I made were transposed which resulted in a tiny […]

]]> a46c59391d30109cd2c743423d680892 Administrator wrote a new post http://bitsofthegoldenage.org/?p=40114 Mon, 06 Apr 2020 01:34:34 -0800 As an undergraduate I was in a very small department where the students were very closely knit with the professors. Late afternoon on Friday was the department’s beer and popcorn day at the local bar where one […]

]]> 6436fb2f9918911676841da4a66f1c1b Administrator wrote a new post http://bitsofthegoldenage.org/?p=40094 Sat, 04 Apr 2020 02:00:24 -0800 I have been having a great deal of fun building and now testing version 1.1b of the bus monitor supreme. So far, there is only one tiny thing that annoys me that I plan on changing in the next version but […]

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