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Merge branch 'master' of https://github.com/wwarthen/RomWBW

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Wayne Warthen
2019-06-21 14:17:59 -07:00
parent 293ca770de 64203d4796
commit 784fd1f433
1 changed files with 5 additions and 3 deletions
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8
Source/HBIOS/hbios.asm
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@@ -866,9 +866,11 @@ HB_START:
; LD HL,(HBX_IMG)
; LD (X2),HL
LD HL,HBX_IMG
LD DE,HBX_LOC
LD BC,HBX_SIZ
LD DE,HBX_LOC ; IF A DS1210 POWER CONTROLLER IS INSTALLED AND BATTERY BACKUP IS NOT
LD A,(DE) ; INSTALLED OR IS LESS THAN 2V THEN THE DS1210 WILL BLOCK THE SECOND RAM
LD A,(DE) ; ACCESS. PERFORM TWO DUMMY READS TO RAM TO ENSURE WE BYPASS THIS FEATURE
LD HL,HBX_IMG ; SO THAT THE ROM ID BYTES ARE COPIED CORRECTLY AND CP/M APPLICATIONS
LD BC,HBX_SIZ ; START CORRECTLY WHEN THEY CHECK THE ROM ID VERSION BYTES.
LDIR
; LD HL,(HBX_IMG)