Sharp CE-150 - Page 334

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A ll and more about Sharp P C- 1500 at http://www.PC-1500.info
4-2-4. PC-1500 system memory map
0 In the MEO area is contained such as th e system program and us er RAM area acid ch c
MEI is used for such as 1/0 pon .
Memor y bank is assigned by J>V and PV for the MEO<irC a of8000H thru BFFFH . and
PU and PU arc used to assign the PVarea of8000H th ru 9 FFFH . Addr ess OOOOH thru
7FFFH is used for the user a J' ca and 8000H th ru FFFFH for the system ar e <o.
The sy s te n1 ar ea is us ed by the n1 n cJnon ic pro g ran1 rn i ngsys te n1 by \vhi ch the Cf'lJ. 1/0
J) C. e tc. are contrtlllcd. and th e user ar ea is u se d to stor e the pr og ran1 \vritten in
BASIC. n1n e n1onic progran 1r n in g l anguage .. and da ta.
With chc PC-1500, MEO memory area 4000H thru 47FFH and 7600H thru 7BFFH ar e
used for the user memory an d C OOOH thru F FFFH for the system program.
When ch e CE- 150 OJ' CE- 158 is connected. the system program. 1/ 0 po1 1. a nd RAM
are a rr an g.l'd as sh(>\ Vrt in the next page.
0 Upon pow er on to the PC-1500. in i1i ali rn ti on srnrts for peripheral units according to
th e syst cn1 pro g ram residin g in t he s}
1
s tcrr 1 area. and the us er area ROM and I~ / \ r'i.1 are
checked .. then ic becomes re ady for a key e ntr y.
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