Bless this guy's parents.
Me a couple of days ago:
https://twitter.com/thibaut_barrere/status/17711464663602670...
I am really grateful!
After 41 years, my first assembly program on my first computer, the Tomy Tutor
21–28 of 28 posts
Re: After 41 years, my first assembly program on my first computer, the Tomy Tutor
#2260 years ago, I never got to debug my first assembly program, which had 1 syntax error and an unknown number of bugs, because NASA launched a weather satellite, data from which monopolized the 7090 which the high school enrichmment program was having programs run on. Still rankles a bit.
I’ve recently been disillusioned in my admiration for NASA. How NASA used a child math prodigy back in the 1970s: “ At that time, I led my life like a machine – I woke up, solved the daily assigned equation, ate, slept, and so forth. I really didn’t know what I was doing, and I was lonely and had no friends.” Career scientists and engineers using a kid like this? Pretty scummy in my book. Compare that to how Srinivas…
[deleted]
Re: After 41 years, my first assembly program on my first computer, the Tomy Tutor
#2360 years ago, I never got to debug my first assembly program, which had 1 syntax error and an unknown number of bugs, because NASA launched a weather satellite, data from which monopolized the 7090 which the high school enrichmment program was having programs run on. Still rankles a bit.
I’ve recently been disillusioned in my admiration for NASA. How NASA used a child math prodigy back in the 1970s: “ At that time, I led my life like a machine – I woke up, solved the daily assigned equation, ate, slept, and so forth. I really didn’t know what I was doing, and I was lonely and had no friends.” Career scientists and engineers using a kid like this? Pretty scummy in my book. Compare that to how Srinivas…
If it's the British and the treatment of the brilliant people, the story that comes to mind is of Alan Turing.
https://en.wikipedia.org/wiki/Alan_Turing#Homosexuality_and_...
Re: After 41 years, my first assembly program on my first computer, the Tomy Tutor
#24Earlier quoted context omitted.
The home computer boom of the 70's and early 80's was the product of cheap microprocessors entering the market in the 1970's (chiefly the 6502 and Z80). In some cases it was scrappy startups (e.g. Apple) and in others it was an attempt to get in on the gold rush. There were no "standards" yet; IBM had yet to enter the fray, and when it finally did in 1981 it was still way too expensive for most of the home market, so…
Not sure it was hard sell. The computers were expensive but people knew they are the future. Parents who could afford it would buy it for the kids just to have access to the computers without knowing what good they are for.
Maybe if they were rich, but computers were bordering on new-car expensive in the 80s, and were indeed a hard sell for most working-class American families. Even something as basic as a Commodore 64 could cost you a few hundred dollars, and that was before the accessories got involved in it -- some of which you needed if you wanted to save programs or run commercial software. Some parents could be swayed by the computer's educational value in teaching things like math, reading, grammar, and geography, hence the glut of edutainment titles available for the early 8-bit machines. But even in the affluent town where I grew up, very few of us kids actually had computers.
The real winners of the home-computer revolution were the ones who knew how to cut costs effectively, companies like Commodore and Sinclair, in order to grow the market -- and the market only really grew once component prices started falling once the 80s were underway.
My family was... a little different. My father, a mechanical engineer, actually had a use for computers in the home: when the force and mechanical advantage calculations on your novel engine design became too complex for programmable calculators, a more powerful desktop computer was just the tool needed. He got me a VIC-20, and later a TI-99/4A, so I would keep my grubby mitts off his expensive Tandy business machine.
Re: After 41 years, my first assembly program on my first computer, the Tomy Tutor
#25Very interesting article, but the architecture seems quite odd. And the journey to cut to japan and back not helping. Still like second extinction, it showed the variety when you think odd. It also asked my earlier question about zero page architecture… lately the idea of having large cache under amd might be another evolutionary path btw.
Re: After 41 years, my first assembly program on my first computer, the Tomy Tutor
#26Earlier quoted context omitted.
I’ve recently been disillusioned in my admiration for NASA. How NASA used a child math prodigy back in the 1970s: “ At that time, I led my life like a machine – I woke up, solved the daily assigned equation, ate, slept, and so forth. I really didn’t know what I was doing, and I was lonely and had no friends.” Career scientists and engineers using a kid like this? Pretty scummy in my book. Compare that to how Srinivas…
If it's the British and the treatment of the brilliant people, the story that comes to mind is of Alan Turing. https://en.wikipedia.org/wiki/Alan_Turing#Homosexuality_and_...
Very poor example.
Technical brilliance didn't protect Alan Turing from a badly-written sex law pushed out in 1885, but technical brilliance wasn't the cause of his mistreatment.
Whereas it was technical brilliance that made a young, 8-year-old 210 iq child the target of exploitation by NASA in an era where child-exploitation was already frowned upon for decades.
And of course, in the height of irony one of the aims of https://en.wikipedia.org/wiki/Criminal_Law_Amendment_Act_188... was to protect the very young; so a very poor example indeed.
Re: After 41 years, my first assembly program on my first computer, the Tomy Tutor
#27I just realized I have a 9995-based Tomy Tutor in my closet. Now that I know about this project, I'll have to dig it out. FWIW, for the two years I lived in Richardson, TX, I drove by TI mainside every day to get to work. I eventually remembered how much fun 9900 assembly was and got the vanity plate BLWP [Branch and Load Workspace Pointer], one of the most unique 9900 instructions.
Re: After 41 years, my first assembly program on my first computer, the Tomy Tutor
#28The TMS9900 was made in I²L bipolar technology, not MOS. Texas Instruments also had a 4 wide bitslice using the same fabrication process.
You must confuse TMS9900 with other TI integrated circuits, perhaps those used for TMS990. TMS9900, which was 16-bit CPU in a big 64-pin package (like that used later by Motorola MC68000) was certainly made in an NMOS technology. See e.g. Wikipedia: https://en.wikipedia.org/wiki/TMS9900 There is no doubt about this because TMS9900 required -5 V (for substrate bias), +5 V and +12 V (for enhancement MOS load transistor…
You are correct as is the other reply to my post. The chip in chapter 3 of the 1977 "The Bipolar Microcomputer Components Data Book" from Texas Instruments is the SBP9900 processor, not the TMS9900. I had never noticed this detail before and always had used this book as my reference for the 9900.