29 Jun
2007
29 Jun
'07
11:41 a.m.
The 2200 used about 200 TTL parts for the main CPU, plus a lot of low
density ROMS and DRAM for the BASIC ROM and program memories, another 80
The HP9830 has about 80 chips in the bit-serial CPU (mostly TTL and 9 256
nybble PROMs) + memory control (more TTL, perhaps another 40 chips there)
+ BASIC ROMs (30 512 byte chips) + RAM (16 1103s for each kiloword) +
cassette contorl (30 more chips) + display (20 more) + keyboard (another
dozen)? I've not counted them all,
I'd be curious to know how fast the 9830 was in
comparison. This small
program:
10 T=0
20 FOR I=1 TO 10000
30 T=T+I
40 NEXT I
50 PRINT T
60 END
I've just tried it on my 9830 (yes, it still works). The only change I
made was line 50 DISP T (to display it on the LED display rather than
print it on the 9866 printer).
The 9830 is a little slower than the Wang, but not much. It took about 2
minutes to run.
takes about 90 seconds to run on the 2200T (btw, everything is double
precision BCD). You can see more detailed timing on each BASIC
operation here:
http://www.wang2200.org/performance.html
-tony