EAE Hard to find parts:

Exported from M8340E.sch at 9/26/2019 5:42:13 PM

Part     Value          Device            Package      Library  Sheet
E11      DEC23001A1     5600              DIL16        memory   1
E17      SP384N         SP384N            DIL14        dec-con  1
E19      DEC23002A1     5600              DIL16        memory   1
E20      SP380N         SP380N            DIL14        dec-con  1
E21      SP384N         SP384N            DIL14        dec-con  1
E25      SP380N         SP380N            DIL14        dec-con  1
E29      SP384N         SP384N            DIL14        dec-con  1
E32      SP384N         SP384N            DIL14        dec-con  1
E36      MC8266         MC8266            DIL16        dec-con  1

Exported from M8341D.sch at 9/29/2019 10:43:55 AM

Part     Value          Device            Package      Library  Sheet
E3       SP380N         SP380N            DIL14        dec-con  1
E16      DEC8235        DEC8235           DIL16        dec-con  2
E20      DEC8235        DEC8235           DIL16        dec-con  2
E22      N8881N         N8881N            DIL14        dec-con  2
E24      DEC8235        DEC8235           DIL16        dec-con  2
E27      DEC8235        DEC8235           DIL16        dec-con  2
E29      SP380N         SP380N            DIL14        dec-con  1
E30      SP384N         SP384N            DIL14        dec-con  1
E31      DEC8235        DEC8235           DIL16        dec-con  2
E32      N8881N         N8881N            DIL14        dec-con  2
E36      N8881N         N8881N            DIL14        dec-con  1
E40      SP380N         SP380N            DIL14        dec-con  1

N8881 have a replacement (97401).
SP380 can be replaced with high impedance 7402 variants.
SP384 can be replaced with high impedance 7430 variants.

Remaining issues: DEC ROMs, DEC8235, MC8266