To: Yaacov who wrote (45574 ) 5/28/2000 6:31:00 PM From: SunSpot Respond to of 74651
Where were we before DOS and Windows, you ask... it really brought a big smile to my face... I had a CP/M machine based on a Z80A processor (4MHz), with to diskette drives with each 880KByte capacity. Graphics resolution was approx. 720x370, and a 1MByte (!) RAM disk was attached. We could read a lot of different diskette formats from different CP/M machines, which was not that usual. Then I downgraded to DOS (!) with an 8MHz IBM PC/XT compatible with two 360Kbyte diskette drives, CGA display with 620x200 resolution. Only after half a year or a year I got a 32MB Seagate ST238R RLL harddisk, and then things got better than the previous OS. The main benefit of DOS was not the OS, but the hardware compatibility, defined by IBMs hardware design. Do you remember those machines that ran MS-DOS, but weren't IBM PC hardware compatible? Completely useless. The only reason I changed was because my brother also changed from CP/M to DOS. I cannot remember why he changed, but the fact is, that I did not exchange CP/M with DOS because of technical superiority, I did it in spite of worse performance. The most funny thing is, that most things ran much slower in DOS than in CP/M, even though the processor was faster. Mostly because of the way the screen updates was handled. The first improvement in our lives provided by MSFT was the standard API for using more than 640KByte of memory: Windows 3.0. Before that, GEM was the preferred GUI and there were several memory managers available. And before Windows 3.0 there were no problems in living without MSFT technology, in fact I used DR-DOS most of the time, because I believed it was better. I changed to use MS-DOS with Windows 3.0, because I found that it was more compatible, not better.